GNU Astronomy Utilities

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Index: Macros, structures and functions

All Gnuastro library’s exported macros start with GAL_, and its exported structures and functions start with gal_. This abbreviation stands for GNU Astronomy Library. The next element in the name is the name of the header which declares or defines them, so to use the gal_array_fset_const function, you have to #include <gnuastro/array.h>. See Gnuastro library for more. The pthread_barrier constructs are our implementation and are only available on systems that don’t have them, see Implementation of pthread_barrier.

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gal_arithmetic: Arithmetic on datasets
GAL_ARITHMETIC_FLAGS_BASIC: Arithmetic on datasets
GAL_ARITHMETIC_FLAG_ENVSEED: Arithmetic on datasets
GAL_ARITHMETIC_FLAG_FREE: Arithmetic on datasets
GAL_ARITHMETIC_FLAG_INPLACE: Arithmetic on datasets
GAL_ARITHMETIC_FLAG_NUMOK: Arithmetic on datasets
GAL_ARITHMETIC_FLAG_QUIET: Arithmetic on datasets
gal_arithmetic_operator_string: Arithmetic on datasets
GAL_ARITHMETIC_OP_ABS: Arithmetic on datasets
GAL_ARITHMETIC_OP_ACOS: Arithmetic on datasets
GAL_ARITHMETIC_OP_ACOSH: Arithmetic on datasets
GAL_ARITHMETIC_OP_AND: Arithmetic on datasets
GAL_ARITHMETIC_OP_ASIN: Arithmetic on datasets
GAL_ARITHMETIC_OP_ASINH: Arithmetic on datasets
GAL_ARITHMETIC_OP_ATAN: Arithmetic on datasets
GAL_ARITHMETIC_OP_ATAN2: Arithmetic on datasets
GAL_ARITHMETIC_OP_ATANH: Arithmetic on datasets
GAL_ARITHMETIC_OP_BITAND: Arithmetic on datasets
GAL_ARITHMETIC_OP_BITLSH: Arithmetic on datasets
GAL_ARITHMETIC_OP_BITNOT: Arithmetic on datasets
GAL_ARITHMETIC_OP_BITOR: Arithmetic on datasets
GAL_ARITHMETIC_OP_BITRSH: Arithmetic on datasets
GAL_ARITHMETIC_OP_BITXOR: Arithmetic on datasets
GAL_ARITHMETIC_OP_COS: Arithmetic on datasets
GAL_ARITHMETIC_OP_COSH: Arithmetic on datasets
GAL_ARITHMETIC_OP_DEC_TO_DEGREE: Arithmetic on datasets
GAL_ARITHMETIC_OP_DEGREE_TO_DEC: Arithmetic on datasets
GAL_ARITHMETIC_OP_DEGREE_TO_RA: Arithmetic on datasets
GAL_ARITHMETIC_OP_DIVIDE: Arithmetic on datasets
GAL_ARITHMETIC_OP_EQ: Arithmetic on datasets
GAL_ARITHMETIC_OP_GE: Arithmetic on datasets
GAL_ARITHMETIC_OP_GT: Arithmetic on datasets
GAL_ARITHMETIC_OP_ISBLANK: Arithmetic on datasets
GAL_ARITHMETIC_OP_LE: Arithmetic on datasets
GAL_ARITHMETIC_OP_LOG: Arithmetic on datasets
GAL_ARITHMETIC_OP_LOG10: Arithmetic on datasets
GAL_ARITHMETIC_OP_LT: Arithmetic on datasets
GAL_ARITHMETIC_OP_MAKENEW: Arithmetic on datasets
GAL_ARITHMETIC_OP_MAX: Arithmetic on datasets
GAL_ARITHMETIC_OP_MAXVAL: Arithmetic on datasets
GAL_ARITHMETIC_OP_MEAN: Arithmetic on datasets
GAL_ARITHMETIC_OP_MEANVAL: Arithmetic on datasets
GAL_ARITHMETIC_OP_MEDIAN: Arithmetic on datasets
GAL_ARITHMETIC_OP_MEDIANVAL: Arithmetic on datasets
GAL_ARITHMETIC_OP_MIN: Arithmetic on datasets
GAL_ARITHMETIC_OP_MINUS: Arithmetic on datasets
GAL_ARITHMETIC_OP_MINVAL: Arithmetic on datasets
GAL_ARITHMETIC_OP_MODULO: Arithmetic on datasets
GAL_ARITHMETIC_OP_MULTIPLY: Arithmetic on datasets
GAL_ARITHMETIC_OP_NE: Arithmetic on datasets
GAL_ARITHMETIC_OP_NOT: Arithmetic on datasets
GAL_ARITHMETIC_OP_NUMBER: Arithmetic on datasets
GAL_ARITHMETIC_OP_NUMBERVAL: Arithmetic on datasets
GAL_ARITHMETIC_OP_OR: Arithmetic on datasets
GAL_ARITHMETIC_OP_PLUS: Arithmetic on datasets
GAL_ARITHMETIC_OP_POW: Arithmetic on datasets
GAL_ARITHMETIC_OP_QUANTILE: Arithmetic on datasets
GAL_ARITHMETIC_OP_RA_TO_DEGREE: Arithmetic on datasets
GAL_ARITHMETIC_OP_SIGCLIP_MEAN: Arithmetic on datasets
GAL_ARITHMETIC_OP_SIGCLIP_STD: Arithmetic on datasets
GAL_ARITHMETIC_OP_SIN: Arithmetic on datasets
GAL_ARITHMETIC_OP_SINH: Arithmetic on datasets
GAL_ARITHMETIC_OP_SIZE: Arithmetic on datasets
GAL_ARITHMETIC_OP_SQRT: Arithmetic on datasets
GAL_ARITHMETIC_OP_STD: Arithmetic on datasets
GAL_ARITHMETIC_OP_STDVAL: Arithmetic on datasets
GAL_ARITHMETIC_OP_SUM: Arithmetic on datasets
GAL_ARITHMETIC_OP_SUMVAL: Arithmetic on datasets
GAL_ARITHMETIC_OP_TAN: Arithmetic on datasets
GAL_ARITHMETIC_OP_TANH: Arithmetic on datasets
GAL_ARITHMETIC_OP_TO_FLOAT32: Arithmetic on datasets
GAL_ARITHMETIC_OP_TO_FLOAT64: Arithmetic on datasets
GAL_ARITHMETIC_OP_TO_INT16: Arithmetic on datasets
GAL_ARITHMETIC_OP_TO_INT32: Arithmetic on datasets
GAL_ARITHMETIC_OP_TO_INT64: Arithmetic on datasets
GAL_ARITHMETIC_OP_TO_INT8: Arithmetic on datasets
GAL_ARITHMETIC_OP_TO_UINT16: Arithmetic on datasets
GAL_ARITHMETIC_OP_TO_UINT32: Arithmetic on datasets
GAL_ARITHMETIC_OP_TO_UINT64: Arithmetic on datasets
GAL_ARITHMETIC_OP_TO_UINT8: Arithmetic on datasets
GAL_ARITHMETIC_OP_WHERE: Arithmetic on datasets
gal_arithmetic_set_operator: Arithmetic on datasets
gal_array_file_recognized: Array input output
gal_array_name_recognized: Array input output
gal_array_name_recognized_multiext: Array input output
gal_array_read: Array input output
gal_array_read_one_ch: Array input output
gal_array_read_one_ch_to_type: Array input output
gal_array_read_to_type: Array input output
gal_binary_connected_adjacency_list: Binary datasets
gal_binary_connected_adjacency_matrix: Binary datasets
gal_binary_connected_components: Binary datasets
gal_binary_connected_indexs(gal_data_t: Binary datasets
gal_binary_dilate: Binary datasets
gal_binary_erode: Binary datasets
gal_binary_holes_fill: Binary datasets
gal_binary_holes_label: Binary datasets
gal_binary_open: Binary datasets
GAL_BINARY_TMP_VALUE: Binary datasets
gal_blank_alloc_write: Library blank values
gal_blank_as_string: Library blank values
gal_blank_flag: Library blank values
gal_blank_flag_apply: Library blank values
gal_blank_flag_remove: Library blank values
GAL_BLANK_FLOAT32: Library blank values
GAL_BLANK_FLOAT64: Library blank values
gal_blank_initialize: Library blank values
gal_blank_initialize_array: Library blank values
GAL_BLANK_INT: Library blank values
GAL_BLANK_INT16: Library blank values
GAL_BLANK_INT32: Library blank values
GAL_BLANK_INT64: Library blank values
GAL_BLANK_INT8: Library blank values
gal_blank_is: Library blank values
GAL_BLANK_LONG: Library blank values
gal_blank_number: Library blank values
gal_blank_present: Library blank values
gal_blank_remove: Library blank values
gal_blank_remove_realloc: Library blank values
gal_blank_remove_rows: Library blank values
GAL_BLANK_SIZE_T: Library blank values
GAL_BLANK_STRING: Library blank values
GAL_BLANK_UINT: Library blank values
GAL_BLANK_UINT16: Library blank values
GAL_BLANK_UINT32: Library blank values
GAL_BLANK_UINT64: Library blank values
GAL_BLANK_UINT8: Library blank values
GAL_BLANK_ULONG: Library blank values
gal_blank_write: Library blank values
gal_box_border_from_center: Bounding box
gal_box_bound_ellipse: Bounding box
gal_box_bound_ellipse_extent: Bounding box
gal_box_bound_ellipsoid: Bounding box
gal_box_bound_ellipsoid_extent: Bounding box
gal_box_overlap: Bounding box
GAL_CONFIG_HAVE_FITS_IS_REENTRANT: Configuration information
GAL_CONFIG_HAVE_LIBGIT2: Configuration information
GAL_CONFIG_HAVE_PTHREAD_BARRIER: Configuration information
GAL_CONFIG_HAVE_WCSLIB_DIS_H: Configuration information
GAL_CONFIG_HAVE_WCSLIB_MJDREF: Configuration information
GAL_CONFIG_HAVE_WCSLIB_OBSFIX: Configuration information
GAL_CONFIG_HAVE_WCSLIB_VERSION: Configuration information
GAL_CONFIG_SIZEOF_LONG: Configuration information
GAL_CONFIG_SIZEOF_SIZE_T: Configuration information
GAL_CONFIG_VERSION: Configuration information
gal_convolve_spatial: Convolution functions
gal_convolve_spatial_correct_ch_edge: Convolution functions
gal_cosmology_age: Cosmology library
gal_cosmology_angular_distance: Cosmology library
gal_cosmology_comoving_volume: Cosmology library
gal_cosmology_critical_density: Cosmology library
gal_cosmology_distance_modulus: Cosmology library
gal_cosmology_luminosity_distance: Cosmology library
gal_cosmology_proper_distance: Cosmology library
gal_cosmology_to_absolute_mag: Cosmology library
gal_cosmology_velocity_from_z: Cosmology library
gal_cosmology_z_from_velocity: Cosmology library
gal_data_alloc: Dataset allocation
gal_data_array_calloc: Arrays of datasets
gal_data_array_free: Arrays of datasets
gal_data_array_ptr_calloc: Arrays of datasets
gal_data_array_ptr_free: Arrays of datasets
gal_data_copy: Copying datasets
gal_data_copy_string_to_number: Copying datasets
gal_data_copy_to_allocated: Copying datasets
gal_data_copy_to_new_type: Copying datasets
gal_data_copy_to_new_type_free: Copying datasets
gal_data_free: Dataset allocation
gal_data_free_contents: Dataset allocation
gal_data_initialize: Dataset allocation
gal_dimension_add_coords: Dimensions
gal_dimension_collapse_mean: Dimensions
gal_dimension_collapse_minmax: Dimensions
gal_dimension_collapse_number: Dimensions
gal_dimension_collapse_sum: Dimensions
gal_dimension_coord_to_index: Dimensions
gal_dimension_dist_elliptical: Dimensions
gal_dimension_dist_manhattan: Dimensions
gal_dimension_dist_radial: Dimensions
gal_dimension_increment: Dimensions
gal_dimension_index_to_coord: Dimensions
gal_dimension_is_different: Dimensions
gal_dimension_num_neighbors: Dimensions
gal_dimension_remove_extra: Dimensions
gal_dimension_total_size: Dimensions
gal_ds9_reg_read_polygon: SAO DS9 library
gal_eps_name_is_eps: EPS files
gal_eps_suffix_is_eps: EPS files
gal_eps_to_pt: EPS files
gal_eps_write: EPS files
gal_fits_bitpix_to_type: CFITSIO and Gnuastro types
gal_fits_datatype_to_type: CFITSIO and Gnuastro types
gal_fits_file_recognized: FITS macros errors filenames
gal_fits_hdu_datasum: FITS HDUs
gal_fits_hdu_datasum_ptr: FITS HDUs
gal_fits_hdu_format: FITS HDUs
gal_fits_hdu_is_healpix: FITS HDUs
gal_fits_hdu_num: FITS HDUs
gal_fits_hdu_open: FITS HDUs
gal_fits_hdu_open_format: FITS HDUs
gal_fits_img_info: FITS arrays
gal_fits_img_info_dim: FITS arrays
gal_fits_img_read: FITS arrays
gal_fits_img_read_kernel: FITS arrays
gal_fits_img_read_to_type: FITS arrays
gal_fits_img_write: FITS arrays
gal_fits_img_write_corr_wcs_str: FITS arrays
gal_fits_img_write_to_ptr: FITS arrays
gal_fits_img_write_to_type: FITS arrays
gal_fits_io_error: FITS macros errors filenames
gal_fits_key_clean_str_value: FITS header keywords
gal_fits_key_date_to_seconds: FITS header keywords
gal_fits_key_date_to_struct_tm: FITS header keywords
gal_fits_key_img_blank: FITS header keywords
gal_fits_key_list_add: FITS header keywords
gal_fits_key_list_add_end: FITS header keywords
gal_fits_key_list_comment_add: FITS header keywords
gal_fits_key_list_comment_add_end: FITS header keywords
gal_fits_key_list_reverse: FITS header keywords
gal_fits_key_list_title_add: FITS header keywords
gal_fits_key_list_title_add_end: FITS header keywords
gal_fits_key_read: FITS header keywords
gal_fits_key_read_from_ptr: FITS header keywords
gal_fits_key_write: FITS header keywords
gal_fits_key_write_config: FITS header keywords
gal_fits_key_write_filename: FITS header keywords
gal_fits_key_write_in_ptr: FITS header keywords
gal_fits_key_write_title_in_ptr: FITS header keywords
gal_fits_key_write_version: FITS header keywords
gal_fits_key_write_version_in_ptr: FITS header keywords
gal_fits_key_write_wcsstr: FITS header keywords
GAL_FITS_MAX_NDIM: FITS macros errors filenames
gal_fits_name_is_fits: FITS macros errors filenames
gal_fits_name_save_as_string: FITS macros errors filenames
gal_fits_open_to_write: FITS HDUs
gal_fits_suffix_is_fits: FITS macros errors filenames
gal_fits_tab_format: FITS tables
gal_fits_tab_info: FITS tables
gal_fits_tab_read: FITS tables
gal_fits_tab_size: FITS tables
gal_fits_tab_write: FITS tables
gal_fits_type_to_bin_tform: CFITSIO and Gnuastro types
gal_fits_type_to_bitpix: CFITSIO and Gnuastro types
gal_fits_type_to_datatype: CFITSIO and Gnuastro types
gal_git_describe: Git wrappers
gal_interpolate_1d_blank: Interpolation
gal_interpolate_1d_make_gsl_spline: Interpolation
gal_interpolate_neighbors: Interpolation
gal_jpeg_name_is_jpeg: JPEG files
gal_jpeg_read: JPEG files
gal_jpeg_suffix_is_jpeg: JPEG files
gal_jpeg_write: JPEG files
gal_kdtree_create: K-d tree
gal_kdtree_nearest_neighbour: K-d tree
gal_label_clump_significance: Labeled datasets
gal_label_grow_indexs: Labeled datasets
gal_label_indexs: Labeled datasets
GAL_LABEL_INIT: Labeled datasets
GAL_LABEL_RIVER: Labeled datasets
GAL_LABEL_TMPCHECK: Labeled datasets
gal_label_watershed: Labeled datasets
gal_list_data_add: List of gal_data_t
gal_list_data_add_alloc: List of gal_data_t
gal_list_data_free: List of gal_data_t
gal_list_data_last: List of gal_data_t
gal_list_data_number: List of gal_data_t
gal_list_data_pop: List of gal_data_t
gal_list_data_reverse: List of gal_data_t
gal_list_data_to_array_ptr: List of gal_data_t
gal_list_dosizet_add: Doubly linked ordered list of size_t
gal_list_dosizet_free: Doubly linked ordered list of size_t
gal_list_dosizet_pop_smallest: Doubly linked ordered list of size_t
gal_list_dosizet_print: Doubly linked ordered list of size_t
gal_list_dosizet_to_sizet: Doubly linked ordered list of size_t
gal_list_f32_add: List of float
gal_list_f32_free: List of float
gal_list_f32_last: List of float
gal_list_f32_number: List of float
gal_list_f32_pop: List of float
gal_list_f32_print: List of float
gal_list_f32_reverse: List of float
gal_list_f32_to_array: List of float
gal_list_f64_add: List of double
gal_list_f64_free: List of double
gal_list_f64_last: List of double
gal_list_f64_number: List of double
gal_list_f64_pop: List of double
gal_list_f64_print: List of double
gal_list_f64_reverse: List of double
gal_list_f64_to_array: List of double
gal_list_i32_add: List of int32_t
gal_list_i32_free: List of int32_t
gal_list_i32_last: List of int32_t
gal_list_i32_number: List of int32_t
gal_list_i32_pop: List of int32_t
gal_list_i32_print: List of int32_t
gal_list_i32_reverse: List of int32_t
gal_list_i32_to_array: List of int32_t
gal_list_osizet_add: Ordered list of size_t
gal_list_osizet_pop: Ordered list of size_t
gal_list_osizet_to_sizet_free: Ordered list of size_t
gal_list_sizet_add: List of size_t
gal_list_sizet_free: List of size_t
gal_list_sizet_last: List of size_t
gal_list_sizet_number: List of size_t
gal_list_sizet_pop: List of size_t
gal_list_sizet_print: List of size_t
gal_list_sizet_reverse: List of size_t
gal_list_sizet_to_array: List of size_t
gal_list_str_add: List of strings
gal_list_str_free: List of strings
gal_list_str_last: List of strings
gal_list_str_number: List of strings
gal_list_str_pop: List of strings
gal_list_str_print: List of strings
gal_list_str_reverse: List of strings
gal_list_void_add: List of void
gal_list_void_free: List of void
gal_list_void_last: List of void
gal_list_void_number: List of void
gal_list_void_pop: List of void
gal_list_void_reverse: List of void
gal_match_coordinates: Matching
gal_pdf_name_is_pdf: PDF files
gal_pdf_suffix_is_pdf: PDF files
gal_pdf_write: PDF files
gal_permutation_apply: Permutations
gal_permutation_apply_inverse: Permutations
gal_permutation_check: Permutations
gal_pointer_allocate: Pointers
gal_pointer_allocate_ram_or_mmap: Pointers
gal_pointer_increment: Pointers
gal_pointer_mmap_allocate: Pointers
gal_pointer_mmap_free: Pointers
gal_pointer_num_between: Pointers
gal_polygon_area: Polygons
gal_polygon_clip: Polygons
gal_polygon_is_convex: Polygons
gal_polygon_is_counterclockwise: Polygons
gal_polygon_is_inside: Polygons
gal_polygon_is_inside_convex: Polygons
gal_polygon_ppropin: Polygons
gal_polygon_to_counterclockwise: Polygons
gal_polygon_vertices_sort: Polygons
gal_polygon_vertices_sort_convex: Polygons
gal_qsort_index_multi_d: Qsort functions
gal_qsort_index_multi_i: Qsort functions
gal_qsort_index_single: Qsort functions
gal_qsort_index_single_TYPE_d: Qsort functions
gal_qsort_index_single_TYPE_i: Qsort functions
gal_qsort_TYPE_d: Qsort functions
gal_qsort_TYPE_i: Qsort functions
GAL_SPECLINES_ANGSTROM_CIII: Spectral lines library
GAL_SPECLINES_ANGSTROM_HBETA: Spectral lines library
GAL_SPECLINES_ANGSTROM_MGII: Spectral lines library
GAL_SPECLINES_ANGSTROM_NEIII: Spectral lines library
GAL_SPECLINES_ANGSTROM_NII: Spectral lines library
GAL_SPECLINES_ANGSTROM_OII: Spectral lines library
GAL_SPECLINES_ANGSTROM_OIII: Spectral lines library
GAL_SPECLINES_ANGSTROM_SII: Spectral lines library
GAL_SPECLINES_BLIMIT: Spectral lines library
GAL_SPECLINES_CIII: Spectral lines library
GAL_SPECLINES_CIIIBLUE: Spectral lines library
GAL_SPECLINES_CIIIRED: Spectral lines library
GAL_SPECLINES_HALPHA: Spectral lines library
GAL_SPECLINES_HBETA: Spectral lines library
GAL_SPECLINES_HDELTA: Spectral lines library
GAL_SPECLINES_HEIIBLUE: Spectral lines library
GAL_SPECLINES_HEIIRED: Spectral lines library
GAL_SPECLINES_HEPSILON: Spectral lines library
GAL_SPECLINES_HGAMMA: Spectral lines library
GAL_SPECLINES_INVALID: Spectral lines library
GAL_SPECLINES_INVALID_MAX: Spectral lines library
gal_speclines_line_angstrom: Spectral lines library
gal_speclines_line_code: Spectral lines library
gal_speclines_line_name: Spectral lines library
gal_speclines_line_redshift: Spectral lines library
gal_speclines_line_redshift_code: Spectral lines library
GAL_SPECLINES_LYALPHA: Spectral lines library
GAL_SPECLINES_LYLIMIT: Spectral lines library
GAL_SPECLINES_MGII: Spectral lines library
GAL_SPECLINES_MGIIBLUE: Spectral lines library
GAL_SPECLINES_MGIIRED: Spectral lines library
GAL_SPECLINES_NAME_BLIMIT: Spectral lines library
GAL_SPECLINES_NAME_CIII: Spectral lines library
GAL_SPECLINES_NAME_CIIIBLUE: Spectral lines library
GAL_SPECLINES_NAME_CIIIRED: Spectral lines library
GAL_SPECLINES_NAME_HALPHA: Spectral lines library
GAL_SPECLINES_NAME_HBETA: Spectral lines library
GAL_SPECLINES_NAME_HDELTA: Spectral lines library
GAL_SPECLINES_NAME_HEIIBLUE: Spectral lines library
GAL_SPECLINES_NAME_HEIIRED: Spectral lines library
GAL_SPECLINES_NAME_HEPSILON: Spectral lines library
GAL_SPECLINES_NAME_HGAMMA: Spectral lines library
GAL_SPECLINES_NAME_LYALPHA: Spectral lines library
GAL_SPECLINES_NAME_LYLIMIT: Spectral lines library
GAL_SPECLINES_NAME_MGII: Spectral lines library
GAL_SPECLINES_NAME_MGIIBLUE: Spectral lines library
GAL_SPECLINES_NAME_MGIIRED: Spectral lines library
GAL_SPECLINES_NAME_NEIII: Spectral lines library
GAL_SPECLINES_NAME_NII: Spectral lines library
GAL_SPECLINES_NAME_NIIBLUE: Spectral lines library
GAL_SPECLINES_NAME_NIIRED: Spectral lines library
GAL_SPECLINES_NAME_OII: Spectral lines library
GAL_SPECLINES_NAME_OIIBLUE: Spectral lines library
GAL_SPECLINES_NAME_OIII: Spectral lines library
GAL_SPECLINES_NAME_OIIIBLUE: Spectral lines library
GAL_SPECLINES_NAME_OIIIRED: Spectral lines library
GAL_SPECLINES_NAME_OIIRED: Spectral lines library
GAL_SPECLINES_NAME_SII: Spectral lines library
GAL_SPECLINES_NAME_SIIBLUE: Spectral lines library
GAL_SPECLINES_NAME_SIIRED: Spectral lines library
GAL_SPECLINES_NEIII: Spectral lines library
GAL_SPECLINES_NII: Spectral lines library
GAL_SPECLINES_NIIBLUE: Spectral lines library
GAL_SPECLINES_NIIRED: Spectral lines library
GAL_SPECLINES_OII: Spectral lines library
GAL_SPECLINES_OIIBLUE: Spectral lines library
GAL_SPECLINES_OIII: Spectral lines library
GAL_SPECLINES_OIIIBLUE: Spectral lines library
GAL_SPECLINES_OIIIRED: Spectral lines library
GAL_SPECLINES_OIIRED: Spectral lines library
GAL_SPECLINES_SII: Spectral lines library
GAL_SPECLINES_SIIBLUE: Spectral lines library
GAL_SPECLINES_SIIRED: Spectral lines library
GAL_STATISTICS_BINS_INVALID: Statistical operations
GAL_STATISTICS_BINS_REGULAR: Statistical operations
gal_statistics_cfp: Statistical operations
gal_statistics_histogram: Statistical operations
gal_statistics_histogram2d: Statistical operations
gal_statistics_is_sorted: Statistical operations
gal_statistics_maximum: Statistical operations
gal_statistics_mean: Statistical operations
gal_statistics_mean_std: Statistical operations
gal_statistics_median: Statistical operations
gal_statistics_minimum: Statistical operations
gal_statistics_mode: Statistical operations
GAL_STATISTICS_MODE_GOOD_SYM: Statistical operations
gal_statistics_mode_mirror_plots: Statistical operations
gal_statistics_no_blank_sorted: Statistical operations
gal_statistics_number: Statistical operations
gal_statistics_outlier_bydistance: Statistical operations
gal_statistics_outlier_flat_cfp: Statistical operations
gal_statistics_quantile: Statistical operations
gal_statistics_quantile_function: Statistical operations
gal_statistics_quantile_function_index: Statistical operations
gal_statistics_quantile_index: Statistical operations
gal_statistics_regular_bins: Statistical operations
gal_statistics_sigma_clip: Statistical operations
gal_statistics_sort_decreasing: Statistical operations
gal_statistics_sort_increasing: Statistical operations
gal_statistics_std: Statistical operations
gal_statistics_sum: Statistical operations
gal_statistics_unique: Statistical operations
gal_table_comments_add_intro: Table input output
GAL_TABLE_DEF_WIDTH_DBL: Table input output
GAL_TABLE_DEF_WIDTH_FLT: Table input output
GAL_TABLE_DEF_WIDTH_INT: Table input output
GAL_TABLE_DEF_WIDTH_LINT: Table input output
GAL_TABLE_DEF_WIDTH_STR: Table input output
GAL_TABLE_DISPLAY_FMT_EXP: Table input output
GAL_TABLE_DISPLAY_FMT_HEX: Table input output
GAL_TABLE_FORMAT_AFITS: Table input output
GAL_TABLE_FORMAT_BFITS: Table input output
GAL_TABLE_FORMAT_INVALID: Table input output
GAL_TABLE_FORMAT_TXT: Table input output
gal_table_info: Table input output
gal_table_list_of_indexs: Table input output
gal_table_print_info: Table input output
gal_table_read: Table input output
GAL_TABLE_SEARCH_COMMENT: Table input output
GAL_TABLE_SEARCH_INVALID: Table input output
GAL_TABLE_SEARCH_NAME: Table input output
GAL_TABLE_SEARCH_UNIT: Table input output
gal_table_write: Table input output
gal_table_write_log: Table input output
gal_threads_attr_barrier_init: Gnuastro's thread related functions
gal_threads_dist_in_threads: Gnuastro's thread related functions
gal_threads_number: Gnuastro's thread related functions
gal_threads_spin_off: Gnuastro's thread related functions
gal_tiff_dir_string_read: TIFF files
gal_tiff_name_is_tiff: TIFF files
gal_tiff_read: TIFF files
gal_tiff_suffix_is_tiff: TIFF files
gal_tile_block: Independent tiles
gal_tile_block_blank_flag: Independent tiles
gal_tile_block_check_tiles: Independent tiles
gal_tile_block_increment: Independent tiles
gal_tile_block_relative_to_other: Independent tiles
gal_tile_block_write_const_value: Independent tiles
gal_tile_full: Tile grid
gal_tile_full_free_contents: Tile grid
gal_tile_full_id_from_coord: Tile grid
gal_tile_full_permutation: Tile grid
gal_tile_full_sanity_check: Tile grid
gal_tile_full_two_layers: Tile grid
gal_tile_full_values_smooth: Tile grid
gal_tile_full_values_write: Tile grid
GAL_TILE_PARSE_OPERATE: Independent tiles
gal_tile_series_from_minmax: Independent tiles
gal_tile_start_coord: Independent tiles
gal_tile_start_end_coord: Independent tiles
gal_tile_start_end_ind_inclusive: Independent tiles
gal_txt_image_read: Text files
gal_txt_line_stat: Text files
gal_txt_stdin_read: Text files
gal_txt_table_info: Text files
gal_txt_table_read: Text files
gal_txt_trim_space: Text files
gal_txt_write: Text files
GAL_TYPE_BIT: Library data types
gal_type_bit_string: Library data types
GAL_TYPE_COMPLEX32: Library data types
GAL_TYPE_COMPLEX64: Library data types
GAL_TYPE_FLOAT32: Library data types
GAL_TYPE_FLOAT64: Library data types
gal_type_from_name: Library data types
gal_type_from_string: Library data types
GAL_TYPE_INT: Library data types
GAL_TYPE_INT16: Library data types
GAL_TYPE_INT32: Library data types
GAL_TYPE_INT64: Library data types
GAL_TYPE_INT8: Library data types
GAL_TYPE_INVALID: Library data types
gal_type_is_int: Library data types
gal_type_is_list: Library data types
GAL_TYPE_LONG: Library data types
gal_type_max: Library data types
gal_type_min: Library data types
gal_type_name: Library data types
gal_type_out: Library data types
gal_type_sizeof: Library data types
GAL_TYPE_SIZE_T: Library data types
GAL_TYPE_STRING: Library data types
gal_type_string_to_number: Library data types
GAL_TYPE_STRLL: Library data types
gal_type_to_string: Library data types
GAL_TYPE_UINT: Library data types
GAL_TYPE_UINT16: Library data types
GAL_TYPE_UINT32: Library data types
GAL_TYPE_UINT64: Library data types
GAL_TYPE_UINT8: Library data types
GAL_TYPE_ULONG: Library data types
gal_units_au_to_ly: Unit conversion library
gal_units_au_to_pc: Unit conversion library
gal_units_counts_to_jy: Unit conversion library
gal_units_counts_to_mag: Unit conversion library
gal_units_dec_to_degree: Unit conversion library
gal_units_degree_to_dec: Unit conversion library
gal_units_degree_to_ra: Unit conversion library
gal_units_extract_decimal: Unit conversion library
gal_units_ly_to_au: Unit conversion library
gal_units_ly_to_pc: Unit conversion library
gal_units_mag_to_counts: Unit conversion library
gal_units_pc_to_au: Unit conversion library
gal_units_pc_to_ly: Unit conversion library
gal_units_ra_to_degree: Unit conversion library
gal_wcs_angular_distance_deg: World Coordinate System
gal_wcs_clean_small_errors: World Coordinate System
gal_wcs_coordsys_convert: World Coordinate System
GAL_WCS_COORDSYS_ECB1950: World Coordinate System
GAL_WCS_COORDSYS_ECJ2000: World Coordinate System
GAL_WCS_COORDSYS_EQB1950: World Coordinate System
GAL_WCS_COORDSYS_EQJ2000: World Coordinate System
gal_wcs_coordsys_from_string: World Coordinate System
GAL_WCS_COORDSYS_GALACTIC: World Coordinate System
gal_wcs_coordsys_identify: World Coordinate System
GAL_WCS_COORDSYS_INVALID: World Coordinate System
gal_wcs_copy: World Coordinate System
gal_wcs_coverage: World Coordinate System
gal_wcs_create: World Coordinate System
gal_wcs_decompose_pc_cdelt: World Coordinate System
gal_wcs_dimension_name: World Coordinate System
gal_wcs_distortion_convert(struct: World Coordinate System
GAL_WCS_DISTORTION_DSS: World Coordinate System
gal_wcs_distortion_from_string: World Coordinate System
gal_wcs_distortion_identify: World Coordinate System
GAL_WCS_DISTORTION_SIP: World Coordinate System
gal_wcs_distortion_to_string: World Coordinate System
GAL_WCS_DISTORTION_TPD: World Coordinate System
GAL_WCS_DISTORTION_TPV: World Coordinate System
GAL_WCS_DISTORTION_WAT: World Coordinate System
GAL_WCS_FLTERROR: World Coordinate System
gal_wcs_img_to_world: World Coordinate System
GAL_WCS_LINEAR_MATRIX_CD: World Coordinate System
GAL_WCS_LINEAR_MATRIX_PC: World Coordinate System
gal_wcs_on_tile: World Coordinate System
gal_wcs_pixel_area_arcsec2: World Coordinate System
gal_wcs_pixel_scale: World Coordinate System
gal_wcs_read: World Coordinate System
gal_wcs_read_fitsptr: World Coordinate System
gal_wcs_remove_dimension: World Coordinate System
gal_wcs_to_cd: World Coordinate System
gal_wcs_warp_matrix: World Coordinate System
gal_wcs_world_to_img: World Coordinate System
gal_wcs_write: World Coordinate System
gal_wcs_write_in_fitsptr(fitsfile: World Coordinate System
gal_wcs_write_wcsstr: World Coordinate System

pthread_barrierattr_t: Implementation of pthread_barrier
pthread_barrier_destroy: Implementation of pthread_barrier
pthread_barrier_init: Implementation of pthread_barrier
pthread_barrier_t: Implementation of pthread_barrier
pthread_barrier_wait: Implementation of pthread_barrier

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Index Entry  Section

$HOME: Current directory and User wide
$HOME/.local/etc/: Current directory and User wide

--: Operating mode options
--checkconfig: Operating mode options
--cite: Operating mode options
--config=STR: Operating mode options
--disable-guide-message: Gnuastro configure options
--disable-progname: Gnuastro configure options
--dontdelete: Input output options
--enable-check-with-valgrind: Gnuastro configure options
--enable-debug: Gnuastro configure options
--enable-gnulibcheck: Gnuastro configure options
--enable-gnulibcheck: Known issues
--enable-guide-message=no: Gnuastro configure options
--enable-progname: Gnuastro configure options
--enable-progname=no: Gnuastro configure options
--enable-reentrant: CFITSIO
--hdu=STR/INT: Input output options
--help: Arguments and options
--help: Operating mode options
--help: --help
--help output customization: --help
--ignorecase: Input output options
--keepinputdir: Input output options
--keepinputdir: Automatic output
--lastconfig: Operating mode options
--log: Operating mode options
--numthreads: Configuration files
--numthreads: Multi-threaded operations
--numthreads=INT: Operating mode options
--onlyversion=STR: Operating mode options
--output: Configuration files
--output=STR: Input output options
--prefix: Installation directory
--printparams: Options
--printparams: Operating mode options
--program-prefix: Executable names
--program-suffix: Executable names
--program-transform-name: Executable names
--quiet: Operating mode options
--searchin=STR: Input output options
--setdirconf: Operating mode options
--setdirconf: Current directory and User wide
--setusrconf: Operating mode options
--setusrconf: Current directory and User wide
--stdintimeout: Input output options
--tableformat=STR: Input output options
--type=STR: Input output options
--usage: Arguments and options
--usage: Operating mode options
--usage: --usage
--version: Operating mode options
--wcslinearmatrix=STR: Input output options
--without-libgit2: Gnuastro configure options
--without-libjpeg: Gnuastro configure options
--without-libtiff: Gnuastro configure options
--without-pgplot: WCSLIB
-?: Operating mode options
-D: Input output options
-h STR/INT: Input output options
-I: Input output options
-K: Input output options
-mecube (ds9): Viewing multiextension FITS images
-N INT: Operating mode options
-o STR: Input output options
-P: Operating mode options
-q: Operating mode options
-S: Operating mode options
-s STR: Input output options
-T STR: Input output options
-t STR: Input output options
-U: Operating mode options
-V: Operating mode options

./.gnuastro/: Current directory and User wide
./configure: Configuring
./configure: Installation directory
./configure options: Gnuastro configure options
.bashrc: --help
.bashrc: Generating random numbers
.desktop: Viewing multiextension FITS images

2D histogram: Column statistics color-magnitude diagram
2D histogram: 2D Histograms
2D histogram: Statistical operations
2MASS All-Sky Catalog: Available databases

32-bit: Configuration information
3D data-cubes: Dimensionality changing operators
3D data-cubes: MakeCatalog measurements

64-bit: Configuration information

A4 paper size: A4 print book
A4 print book: A4 print book
AAVSO Photometric All Sky Survey, DR9: Available databases
AB magnitude: Unit conversion operators
AB magnitude: Brightness flux magnitude
AB Magnitude: Unit conversion library
Abd al-rahman Sufi: Sufi simulates a detection
Abraham de Moivre: Circles and the complex plane
ACS: Warp
ACS camera: Surface brightness limit of image
Additions to Gnuastro: Suggest new feature
Adjacency matrix: Binary datasets
Adobe systems: Recognized file formats
ADQL (Astronomical Data Query Language): Query
ADU: Brightness flux magnitude
ADU: Instrumental noise
Advanced camera for surveys: Warp
Advanced Camera for Surveys: Warping basics
Advanced Packaging Tool (APT, Debian): Dependencies from package managers
Affine Transformation: Warping basics
AKARI/FIS All-Sky Survey: Available databases
Akima spline interpolation: Interpolation
al-Shirazi, Qutb al-Din: Fourier series historical background
Albert. A. Michelson: Science and its tools
Algorithm: watershed: Labeled datasets
Alias (shell): Invoking astnoisechisel
Alias, shell: Invoking astmkprof
All-sky Survey of GALEX DR5: Available databases
AllWISE Data Release: Available databases
Almagest: Sufi simulates a detection
Amplifier: Tessellation
Angular coverage: Brightness flux magnitude
Annotation of images for paper: Annotations for figure in paper
Announcements: Announcements
Anonymous bug submission: Report a bug
Anscombe F. J.: Science and its tools
Anscombe’s quartet: Science and its tools
Aperture blurring: Sigma clipping
apt-get: Dependencies from package managers
Arch Linux: Dependencies from package managers
Area, ellipse: MakeCatalog measurements
Argp argument parser: --help
Argp argument parser: Mandatory source code files
args.h: Mandatory source code files
Arguments to programs: Arguments and options
Aristarchus of Samos: Fourier series historical background
Array: Linked lists
ASCII plot: Invoking aststatistics
ASCII table, FITS: Recognized table formats
ASCII85 encoding: Invoking astconvertt
ASCII85 encoding: EPS files
astprogname: Naming convention
ASTRON: Available databases
Astronomical data format: Recognized file formats
Astronomical Data Query Language (ADQL): Query
Astronomical Magnitude system: Brightness flux magnitude
Astronomical Units (AU): Unit conversion operators
Astronomical Units (AU): Unit conversion library
Asynchronous thread allocation: Invoking astcrop
Atmosphere: Convolve
Atmosphere blurring: Sigma clipping
authors-cite.h: Mandatory source code files
Auto-complete in the shell: Executable names
Autocomplete (in the shell/Bash): Shell TAB completion
Autocomplete (in the shell/Bash): Mandatory source code files
Autocomplete (in the shell/Bash): Bash programmable completion
Automatic configuration file writing: Configuration file format
Automatic output file names: Automatic output
Automatically created build files: Bootstrapping
Available number of threads: Multi-threaded operations
Average: Statistical operations
Average, weighted: Convolve
AWK: Extract clumps and objects
AWK: Standard input
AWK: Table
AWK: Invoking asttable
AWK: Invoking astarithmetic
AWK: Invoking aststatistics
AWK: Table input output
Axis ratio: Defining an ellipse and ellipsoid
Axis ratio: Dimensions
Azophi: Sufi simulates a detection

Background flux: Sky value definition
Background flux: Photon counting noise
Background pixels: Detection options
Backup: Configure and build in RAM
Balmer limit: CosmicCalculator input options
Balmer limit: Spectral lines library
Band-merged unWISE Catalog: Available databases
Bash auto-complete: Shell TAB completion
Bash auto-complete: Mandatory source code files
Bash auto-complete: Bash programmable completion
Bash programmable completion: Shell TAB completion
Bash programmable completion: Mandatory source code files
Bash programmable completion: Bash programmable completion
Best use of CPU threads: A note on threads
Bi-linear interpolation: Resampling
Bias current: Tessellation
Bicubic interpolation: Resampling
Bicubic interpolation: Quantifying signal in a tile
Bin width, histogram: Histogram and Cumulative Frequency Plot
Binary datasets: Binary datasets
Binary image: Recognized file formats
Binary image: Detection options
Binary table, FITS: Recognized table formats
Bit: Numeric data types
bit-32: Configuration information
bit-64: Configuration information
Bitwise operators: Bitwise operators
Bitwise Or: Arithmetic on datasets
Black and white image: Recognized file formats
blank color channel: Recognized file formats
Blank data: Generic data container
Blank pixel: Blank pixels
Blank pixel: Conditional operators
Blur image: Convolve
Blur image: PSF
Blurring: Sigma clipping
Book formats: Getting help
Bootstrapping: Bootstrapping
Border on an image: Invoking astconvertt
Brahe, Tycho: Science and its tools
Breadth first search: Defining an ellipse and ellipsoid
Breadth first search: Binary datasets
brew: Dependencies from package managers
Brightness: Brightness flux magnitude
Brightness: Galaxies
Brightness: Profile magnitude
Buffers (Emacs): Coding conventions
Bug: Report a bug
Bug: Gnuastro project webpage
Bug reporting: Report a bug
Bug tracker: Report a bug Report a bug
Build: Quick start
Build individual profiles: MakeProfiles output dataset
Build tree: Test scripts
Building from source: Dependencies from package managers
Byte: Numeric data types
Bzip2: Downloading and validating input data

C compiler: Invoking astbuildprog
C Pre-Processor: Invoking astbuildprog
C programming language: Why C
C++ programming language: Why C
C, plotting: PGPLOT
C99: Pointers
C: restrict: Generic data container
Cache, system: A note on threads
Calendar: Sort FITS files by night
Camera: Resampling
CANDELS survey: Crop options
CANDELS survey: Surface brightness limit of image
Caspar Wessel: Circles and the complex plane
Catalog, Gaia: Available databases
Catalog, Vizier: Available databases
CatWISE 2020 catalog: Available databases
CC: Invoking astbuildprog
CCD: Tessellation
CCD: Warp
CDELT: Angular coverage on the sky
CDELT: Input output options
CDS, VizieR: Available databases
Celestial sphere: Brightness flux magnitude
CentOS: Dependencies from package managers
Central management: Gnuastro project webpage
CFITSIO: Keyword inspection and manipulation
CFITSIO: Configuration information
CFITSIO version on outputs: Output FITS files
Change converted pixel values: Invoking astconvertt
Channel: Tessellation
Channel: Array input output
Channel, color: Color
Charge-coupled device: Warp
Check: Quick start
Check center of crop: Crop options
Checking detection algorithms: MakeProfiles
Checking tests: Tests
Checksum: Downloading and validating input data
CHECKSUM: FITS keyword: Keyword inspection and manipulation
CIII doublet: CosmicCalculator input options
CIII doublet: Spectral lines library
Citation information: Mandatory source code files
CIV doublet: CosmicCalculator input options
Claudius Ptolemy: Sufi simulates a detection
CLI: command-line user interface: Command-line interface
CLI: repeating operations: Command-line interface
Clump: Labeled datasets
Clump magnitude limit: Quantifying measurement limits
CMYK: Color
Coaddition: Stacking operators
Color: Color
Color channel: Color
Color channel: Array input output
Color-magnitude diagram: Column statistics color-magnitude diagram
Color-magnitude diagram: 2D histogram as an image
Colormap: Color
Colormap, gray-scale: Color
Colormap, HSV: Color
Colormap: SLS: Invoking astconvertt
Colormap: SLS-inverse: Invoking astconvertt
Colormap: Viridis: Invoking astconvertt
Colors, broad-band photometry: General program usage tutorial
Colorspace, gray-scale: Invoking astconvertt
Colorspace, HSV: Invoking astconvertt
Command-line arguments: Arguments and options
Command-line help: Getting help
Command-line options: Arguments and options
Command-line scroll: --help
Command-line searching text: --help
Command-line user interface: Command-line interface
Command-line, long outputs: --help
Command-line, viewing full book: Info
Comments: Sufi simulates a detection
Commutative property: Merging multiple warpings
Comoving distance: Distance on a 2D curved space
Compare Moffat and Gaussian: PSF
Compare Poisson and Gaussian: Photon counting noise
Compile: Quick start
Compiled PostScript: Recognized file formats
Compiler, C: Invoking astbuildprog
Compiling from source: Dependencies from package managers
Completeness: Extract clumps and objects
Completeness: Completeness limit of each detection
Completion in the shell: Shell TAB completion
Completion in the shell: Mandatory source code files
Completion in the shell: Bash programmable completion
Complex numbers: Invoking astconvolve
Compression: NoiseChisel output
Compression: Segment output
Compression quality in JPEG: Invoking astconvertt
Concave polygons: Crop options
Concave polygons: Polygons
Configuration file directories: Configuration file precedence
Configuration file format: Configuration file format
Configuration file precedence: Configuration file precedence
Configuration file suffix: Configuration file format
Configuration files: Options
Configuration files: Configuration files
Configuration files, system wide: System wide
Configuration files, writing: Configuration file format
Configuration, not finding library: Known issues
Configure options: Configuring
Configure options particular to Gnuastro: Gnuastro configure options
Configuring: Configuring
Connected component labeling: Segment
Connected component labeling: Binary datasets
Connected components: Mathematical morphology operators
Connectivity: Binary datasets
Contour: Invoking aststatistics
Convenient book formats: Getting help
Convention for program source: Program source
Converting data formats: ConvertType
Converting image formats: ConvertType
ConvertType (astconvertt): ConvertType
Convex Hull: Polygons
Convex polygons: Crop options
Convex polygons: Polygons
Convolution: Convolve
Convolution: Convolution process
Convolution: Quantifying signal in a tile
Convolution: PSF
Convolution kernel: FITS arrays
Cookbook: Tutorials
Coordinate matching: Matching
Coordinate scales: Angular coverage on the sky
Coordinate system: Ecliptic: Keyword inspection and manipulation
Coordinate system: Ecliptic: World Coordinate System
Coordinate system: Equatorial: Keyword inspection and manipulation
Coordinate system: Equatorial: World Coordinate System
Coordinate system: Galactic: Keyword inspection and manipulation
Coordinate system: Galactic: World Coordinate System
Coordinate system: Supergalactic: Keyword inspection and manipulation
Coordinate system: Supergalactic: World Coordinate System
Coordinate transformation: Warping basics
Coordinates, homogeneou: Warping basics
Copyright: Your rights
Correlated noise: NoiseChisel optimization for detection
Correlated noise: Upper limit magnitude of each detection
Correlated noise: Surface brightness limit of image
Correlation: Convolution process
Cosmic ray removal: Sky value definition
Cosmic rays: Convolve
Cosmic rays: Warp
Cosmic rays: Sigma clipping
Cosmic rays: Sky value definition
Cosmic rays: Quantifying signal in a tile
COSMOS survey: Crop
Cotes, Roger: Circles and the complex plane
Counting error: Photon counting noise
Counting from zero.: Options
Counts: Brightness flux magnitude
Counts: Instrumental noise
Coverage of image over sky: HDU information and manipulation
CPPFLAGS: Known issues
CPPFLAGS: Invoking astbuildprog
CPU threads: Multi-threaded operations
CPU threads, number: Configuration files
CPU threads, set number: Operating mode options
CPU, using all threads: Multi-threaded operations
CRLF line terminator: Text files
Crop (astcrop): Crop
Crop a given section of image: Crop section syntax
Crop part of image: Crop
Crop section format: Crop section syntax
Cubes (3D data): Dimensionality changing operators
Cubes (3D data): MakeCatalog measurements
Cubic spline interpolation: Interpolation
Cumulative Frequency Plot: Histogram and Cumulative Frequency Plot
cURL (downloading tool): Optional dependencies
Customize --help output: --help
Customize executable names: Executable names
Customizing installation: Configuring

Dark Energy Survey data release 1: Available databases
Data: Quantifying signal in a tile
Data cubes: Dimensionality changing operators
Data format conversion: ConvertType
Data structures: Headers
Data type: Generic data container
Data’s depth: Surface brightness limit of image
Database, Gaia: Available databases
Database, VizieR: Available databases
Dataset: binary: Binary datasets
DATASUM: FITS keyword: HDU information and manipulation
DATASUM: FITS keyword: Keyword inspection and manipulation
Date: FITS format: FITS header keywords
de Moivre, Abraham: Circles and the complex plane
de Moivre, Abraham: Photon counting noise
de Vaucouleur profile: Galaxies
Debian: Dependencies from package managers
Debug: Separate build and source directories
Debug: Operating mode options
Debug: Invoking astbuildprog
Debugging: Gnuastro configure options
Debugging: Building and debugging
Decimal separator: Angular coverage on the sky
Declination: Column arithmetic
Declination: Arithmetic on datasets
Declination: Unit conversion library
Declination: Unit conversion library
Default executable search directory: Installation directory
Default library search directory: Installation directory
Default option values: Options
Default option values: Configuration files
Define section to crop: Crop section syntax
Dependencies, Gnuastro: Mandatory dependencies
Depth: Quantifying measurement limits
Detached threads: Gnuastro's thread related functions
Detection: Convolve
Detection: NoiseChisel
Detections false: Completeness limit of each detection
Detector: Resampling
developer-build: Building and debugging
developer-build: Test scripts
Development packages: Known issues
Diagram, Color-magnitude: 2D histogram as an image
Diffraction limited: PSF
Dilation: Mathematical morphology operators
Dilation: Binary datasets
Dilation (image processing): NoiseChisel optimization
Directory, install: Installation directory
Discrete Fourier transform: Invoking astconvolve
Distance, elliptical/ellipsoidal: Dimensions
Distance, Manhattan: Dimensions
Distortion, optical: Warp
Distortion, WCS: Keyword inspection and manipulation
Distortion, WCS: World Coordinate System
Distortion, WCS: World Coordinate System
Distribution mode: Sky value misconceptions
Distributions, GNU/Linux: Dependencies from package managers
dnf: Dependencies from package managers
Doublet: CIII: CosmicCalculator input options
Doublet: CIII: Spectral lines library
Doublet: CIV: CosmicCalculator input options
Doublet: MgII: CosmicCalculator input options
Doublet: MgII: Spectral lines library
Doublet: NII: CosmicCalculator input options
Doublet: NII: Spectral lines library
Doublet: OII: CosmicCalculator input options
Doublet: OII: Spectral lines library
Doublet: OIII: Spectral lines library
Doublet: OIII (in UV): CosmicCalculator input options
Doublet: OIII (visible): CosmicCalculator input options
Doublet: SII: CosmicCalculator input options
Doublet: SII: Spectral lines library
Doublet: SiIII: CosmicCalculator input options
Douglas Rushkoff: Science and its tools
Drizzle: Resampling
DS9: NoiseChisel and Multiextension FITS files
DS9: Finding reddest clumps and visual inspection
DS9: Extract clumps and objects
DS9: Invoking astconvertt
DS9: Segment output
DSS WCS distortion: World Coordinate System
Dynamic libraries: Installation directory
Dynamic linking: Linking
Dynamic linking: Linking

Ecliptic coordinate system: Keyword inspection and manipulation
Ecliptic coordinate system: World Coordinate System
Edges, image: Resampling
Effective radius: MakeCatalog measurements
Effective radius: Galaxies
Efficient use of CPU threads: A note on threads
Ellipse: Defining an ellipse and ellipsoid
Ellipse: Dimensions
Ellipse area: MakeCatalog measurements
Ellipsoid: Defining an ellipse and ellipsoid
Ellipsoid: Dimensions
Ellipsoidal distance: Dimensions
Elliptical distance: Defining an ellipse and ellipsoid
Elliptical distance: Dimensions
Emacs buffers: Coding conventions
Encapsulated PostScript: Recognized file formats
Environment: Installation directory
Environment variable, HOME: Installation directory
Environment variables: Installation directory
Environment variables: Installation directory
Environment variables: Generating random numbers
Epoch time, Unix: FITS header keywords
Epoch, Unix time: Keyword inspection and manipulation
Epoch, Unix time: Column arithmetic
Epoch, Unix time: Sort FITS files by night
EPS: Recognized file formats
EPS: Invoking astconvertt
EPS: EPS files
EPS: PDF files
Equatorial coordinate system: Keyword inspection and manipulation
Equatorial coordinate system: World Coordinate System
Erosion: Mathematical morphology operators
Erosion: NoiseChisel
Erosion: Detection options
Erosion: Binary datasets
Erosion (image processing): NoiseChisel optimization
Error in surface brightness: Surface brightness error of each detection
Error, floating point round-off: Invoking astconvolve
etc: Configuration files
Euler angles: Defining an ellipse and ellipsoid
Euler angles: Bounding box
Euler, Leonhard: Circles and the complex plane
Exact area resampling: Resampling
Executable names: Executable names
eXtreme Deep Field (XDF) survey: General program usage tutorial
eXtreme Deep Field (XDF) survey: Surface brightness limit of image

False detections: Completeness limit of each detection
Feature request: Gnuastro project webpage
Feature requests: Suggest new feature
Fedora: Dependencies from package managers
File flags: Writing scripts to automate the steps
File I/O: Configure and build in RAM
File operations: Data containers
File system Hierarchy Standard: Configuration files
file systems, tmpfs: Configure and build in RAM
Filename suffix: Arguments
first-in-first-out: Linked lists
first-in-first-out: FITS header keywords
first-in-first-out: Interpolation
FITS: Output FITS files
FITS: FITS files
FITS filename suffixes: Arguments
FITS image viewer: SAO DS9
FITS or FITS/TXT: Options
FITS standard: CFITSIO
FITS standard: Invoking astwarp
FITS standard: Generic data container
FITS Tables: Recognized table formats
Fitting: Modeling and fittings
Flag (mask) images: Bitwise operators
Flags, file: Writing scripts to automate the steps
Flip coordinates: Warping basics
Floating point error: Measuring elliptical parameters
Floating point round-off error: Invoking astconvolve
FLT: Options
Flux: Brightness flux magnitude
Flux to magnitude conversion: Brightness flux magnitude
Foreground pixels: Detection options
FORTRAN: Generic data container
Fourier spectrum: Invoking astconvolve
Free software: Your rights
Free Software Foundation: Contributing to Gnuastro
Free Software Foundation: Copyright assignment
FSF: Contributing to Gnuastro
Full Width at Half Maximum: PSF
Function gradient over pixel area: Sampling from a function
Function groups: Coding conventions
Functions for user interface: Mandatory source code files
FWHM: NoiseChisel optimization for detection
FWHM: MakeCatalog measurements

Gaia catalog: Available databases
GAIA Data Release (2 or 3): Available databases
Gain: Brightness flux magnitude
Gain: Instrumental noise
Galactic coordinate system: Keyword inspection and manipulation
Galactic coordinate system: World Coordinate System
Galaxy profiles: Galaxies
Galileo, Galilei: Science and its tools
Gaussian: Invoking astnoisechisel
Gaussian: Invoking astsegment
Gaussian: Invoking astmkcatalog
Gaussian distribution: Quantifying signal in a tile
Gaussian distribution: PSF
Gaussian FWHM: PSF
GCC: Invoking astbuildprog
GCC: GNU Compiler Collection: New to GNU/Linux?
GCC: GNU Compiler Collection: Summary and example on libraries
GCC: GNU Compiler Collection: Invoking astbuildprog
GCC: GNU Compiler Collection: Invoking astbuildprog
GCC: GNU Compiler Collection: Coding conventions
Gérard de Vaucouleurs: Galaxies
Gedit: Sufi simulates a detection
General file operations: Data containers
Generalized de Vaucouleur profile: Galaxies
Git: Optional dependencies
Git: Version controlled source
Git: Gnuastro configure options
Git: Table input output
Git: Git wrappers
GNOME: NoiseChisel and Multiextension FITS files
GNOME: NoiseChisel output
GNOME 2: Viewing multiextension FITS images
GNOME 3: Command-line interface
GNOME 3: Viewing multiextension FITS images
GNU Astronomy Utilities (Gnuastro): Introduction
GNU Autoconf: Bootstrapping dependencies
GNU Autoconf: Bootstrapping
GNU Autoconf: Synchronizing
GNU Autoconf: Configuring
GNU Autoconf: Building and debugging
GNU Autoconf Archive: Bootstrapping dependencies
GNU Autoconf Archive: Bootstrapping
GNU Automake: Bootstrapping dependencies
GNU Automake: Bootstrapping
GNU Automake: Building and debugging
GNU Autoreconf: Separate build and source directories
GNU AWK: Angular coverage on the sky
GNU AWK: Aperture photometry
GNU AWK: Finding reddest clumps and visual inspection
GNU AWK: Extract clumps and objects
GNU AWK: Standard input
GNU AWK: Table
GNU AWK: Invoking asttable
GNU AWK: Invoking astarithmetic
GNU AWK: Invoking aststatistics
GNU AWK: Invoking aststatistics
GNU AWK: Installed scripts
GNU AWK: Sort FITS files by night
GNU AWK: Table input output
GNU Bash: Command-line interface
GNU Bash: Writing scripts to automate the steps
GNU Bash: Installation directory
GNU Bash: Installation directory
GNU Bash: Keyword inspection and manipulation
GNU Bash: Installed scripts
GNU Bash: Program design philosophy
GNU Bash: Mandatory source code files
GNU Binutils: Linking
GNU build system: Mandatory dependencies
GNU build system: Bootstrapping
GNU build system: Installation directory
GNU build system: Configure and build in RAM
GNU build system: Separate build and source directories
GNU build system: Headers
GNU build system: Headers
GNU build system: Building and debugging
GNU C library: New to GNU/Linux?
GNU C library: Bootstrapping dependencies
GNU C library: Bootstrapping
GNU C library: Gnuastro configure options
GNU C library: Configure and build in RAM
GNU C library: Info
GNU C Library: Keyword inspection and manipulation
GNU C library: Adding new columns to MakeCatalog
GNU C library: Linking
GNU C library: Labeled datasets
GNU C library: Coding conventions
GNU C library: Mandatory source code files
GNU coding standards: Introduction
GNU coding standards: Coding conventions
GNU coding standards: Coding conventions
GNU Compiler Collection (GCC): New to GNU/Linux?
GNU Compiler Collection (GCC): Summary and example on libraries
GNU Compiler Collection (GCC): Invoking astbuildprog
GNU Compiler Collection (GCC): Invoking astbuildprog
GNU Compiler Collection (GCC): Coding conventions
GNU Coreutils: Multi-threaded operations
GNU Coreutils: Invoking asttable
GNU Coreutils: Program design philosophy
GNU CPP: Invoking astbuildprog
GNU Debugger: Gnuastro configure options
GNU Debugger (GDB): Separate build and source directories
GNU Emacs: Command-line interface
GNU Emacs: Sufi simulates a detection
GNU Emacs: Info
GNU Emacs: Coding conventions
GNU Emacs: Coding conventions
GNU Emacs: Coding conventions
GNU free documentation license: Science and its tools
GNU Free Documentation License: Your rights
GNU Free Documentation License: GNU Free Doc. License
GNU General Public License (GPL): Science and its tools
GNU General Public License (GPL): Your rights
GNU General Public License (GPL): GNU General Public License
GNU Grep: --help
GNU Grep: Keyword inspection and manipulation
GNU Grep: CosmicCalculator basic cosmology calculations
GNU Grep: The TEMPLATE program
GNU Gzip: NoiseChisel output
GNU Gzip: Segment output
GNU help2man: Bootstrapping dependencies
GNU Info: Accessing documentation
GNU Info: Info
GNU Libtool: Optional dependencies
GNU Libtool: Bootstrapping dependencies
GNU Libtool: Bootstrapping
GNU Libtool: Known issues
GNU Libtool: Linking
GNU Libtool: Linking
GNU Libtool: Linking
GNU Libtool: BuildProgram
GNU Libtool: Invoking astbuildprog
GNU Libtool: Building and debugging
GNU Make: How to run simultaneous operations
GNU Make: Invoking astbuildprog
GNU Parallel: Finding reddest clumps and visual inspection
GNU Parallel: How to run simultaneous operations
GNU Portability Library (Gnulib): Bootstrapping dependencies
GNU Portability Library (Gnulib): Bootstrapping
GNU Portability Library (Gnulib): Gnuastro configure options
GNU Portability Library (Gnulib): Known issues
GNU Portability Library (Gnulib): Coding conventions
GNU Savannah: Gnuastro project webpage
GNU Scientific Library: GNU Scientific Library
GNU Scientific Library: Generating random numbers
GNU Scientific Library: Permutations
GNU Scientific Library: Interpolation
GNU Scientific Library: Interpolation
GNU SED: Installed scripts
GNU Sed: Sort FITS files by night
GNU software documentation: Info
GNU style options: Options
GNU Tar: Quick start
GNU Texinfo: Your rights
GNU Texinfo: Bootstrapping
GNU Texinfo: A4 print book
GNU Texinfo: Known issues
GNU Wget: Downloading and validating input data
GNU/Linux: New to GNU/Linux?
Gnuastro coding convention: Coding conventions
Gnuastro common options: Common options
Gnuastro major version number: GNU Astronomy Utilities 1.0
Gnuastro program structure convention: Program source
Gnuastro project page: Report a bug
Gnuastro test scripts: Test scripts
Gnulib: Program design philosophy
Gnulib: GNU Portability Library: Bootstrapping dependencies
Gnulib: GNU Portability Library: Bootstrapping
Gnulib: GNU Portability Library: Gnuastro configure options
Gnulib: GNU Portability Library: Known issues
Gnulib: GNU Portability Library: Coding conventions
GPL: GNU General Public License
GPL Ghostscript: Optional dependencies
GPL Ghostscript: Optional dependencies
GPL Ghostscript: Known issues
GPL Ghostscript: Recognized file formats
Gradient over pixel area: Sampling from a function
Graphic user interface: Command-line interface
Gravitational lensing: Warp
Grayscale: Color
Groups of similar functions: Coding conventions
GUI: graphic user interface: Command-line interface
GUI: repeating operations: Command-line interface
Gzip: Quick start
Gzip: Release tarball

H-alpha: CosmicCalculator input options
H-alpha: Spectral lines library
H-beta: CosmicCalculator input options
H-beta: Spectral lines library
H-delta: CosmicCalculator input options
H-delta: Spectral lines library
H-epsilon: CosmicCalculator input options
H-epsilon: Spectral lines library
H-gamma: CosmicCalculator input options
H-gamma: Spectral lines library
Halted program: Report a bug
Hashbang: Writing scripts to automate the steps
HDD: Configure and build in RAM
HDU: Arguments and options
HDU: Input output options
HDU: Invoking astfits
Header data unit: Arguments and options
Header data unit: Input output options
Header file: Coding conventions
HEALPix: Invoking astfits
Help: Getting help
help-gnuastro mailing list: help-gnuastro mailing list help-gnuastro mailing list
Hexadecimal encoding: Invoking astconvertt
Hexadecimal encoding: EPS files
Hipparchus of Nicaea: Brightness flux magnitude
Histogram: Histogram and Cumulative Frequency Plot
Histogram: Sky value misconceptions
Histogram: Statistical operations
Histogram, 2D: Column statistics color-magnitude diagram
Histogram, 2D: 2D Histograms
Histogram, 2D: Statistical operations
history: Writing scripts to automate the steps
HOME: Installation directory
HOME/.local/: Installation directory
Homebrew: Dependencies from package managers
Homogeneous coordinates: Warping basics
Homography: Warping basics
HSV: Hue Saturation Value: Color
HSV: Hue Saturation Value: Invoking astconvertt
Hubble Space Telescope (HST): General program usage tutorial
Hubble Space Telescope (HST): Tessellation
Hubble Space Telescope (HST): Crop
Hubble Space Telescope (HST): Warp
Hubble Space Telescope (HST): Warping basics
Hue, saturation, value: Invoking astconvertt
Hyper Suprime-Cam: Tessellation
Hyperbolic functions: Trigonometric and hyperbolic operators

IAU, international astronomical union: Fits
Identifying outliers: Quantifying signal in a tile
IFU: Integral Field Unit: Dimensionality changing operators
IFU: Integral Field Unit: MakeCatalog measurements
IFU: Integral Field Unit: MakeCatalog measurements
Image: Color
Image annotation: Annotations for figure in paper
Image blurring: PSF
Image edges: Resampling
Image format conversion: ConvertType
Image mosaic: Crop
Image mosaic: Warp
Image noise: Noise basics
Image tiles: Crop
Image transformations: MakeProfiles
Image’s sky coverage: HDU information and manipulation
ImageMagick: Bootstrapping dependencies
Imaging surveys: Crop
Immediate neighbors: Binary datasets
Inconsistent results: Report a bug
Individual profiles: MakeProfiles output dataset Synchronizing
INFOPATH: Installation directory
Input/Output, file: Configure and build in RAM
Inside-out construction: Defining an ellipse and ellipsoid
Inside-out construction: Sampling from a function
Install directory: Installation directory
Install with no super-user access: Installation directory
Installation: Installation
Installation, customizing: Configuring
Installed help methods: Getting help
Instrumental noise: Instrumental noise
INT: Options
Integer, Signed: Numeric data types
Integral Field Unit: MakeCatalog measurements
Integral field unit (IFU): Dimensionality changing operators
Integral field unit (IFU): MakeCatalog measurements
Integration over pixel: Sampling from a function
Integration to infinity: Profile magnitude
Internal default value: Configuration files
Internally stored option value: Multi-threaded operations
Interpolation: Resampling
Interpolation: Interpolation
Interpolation, bi-linear: Resampling
Interpolation, bicubic: Resampling
Interpolation, bicubic: Quantifying signal in a tile
Interpolation, nearest-neighbor: Quantifying signal in a tile
Interpolation: Akima spline: Interpolation
Interpolation: monotonic: Interpolation
Interpolation: Polynomial: Interpolation
Interpolation: Spline: Interpolation
Interpolation: Steffen: Interpolation
Intervals, histogram: Histogram and Cumulative Frequency Plot
IRAF: Recognized file formats
ISO C90: Why C
Issue: Gnuastro project webpage
IVOA: Query

Jansky (Jy): Unit conversion library
Janskys (Jy): Brightness flux magnitude
Java programming language: Why C
Java Virtual Machine (JVM): Why C
Jaynes E. T.: Science and its tools
JPEG compression quality: Invoking astconvertt
JPEG compression quality: JPEG files
JPEG format: Optional dependencies
JPEG format: Gnuastro configure options
JPEG format: Recognized file formats
JPEG format: JPEG files
JVM: Java virtual machine: Why C

K-d tree: K-d tree
Ken Thomson: Science and its tools
Kernel, convolution: Convolve
Kernel, convolution: FITS arrays
Kernel, Linux: Memory management
Kernighan, Brian: Why C

Labeling: NoiseChisel
LANG: Angular coverage on the sky
Language of command-line: Angular coverage on the sky
Large astronomical images: Crop
last-in-first-out: Linked lists
last-in-first-out: FITS header keywords
LaTeX: Bootstrapping dependencies
LaTeX: Recognized file formats
LaTeX: Program design philosophy
Lawrence Livermore National Laboratory: Multithreaded programming
LC_ALL: Angular coverage on the sky
LDFLAGS: Known issues
LDFLAGS: Invoking astbuildprog
LD_LIBRARY_PATH: Installation directory
LD_LIBRARY_PATH: Known issues
Learning GNU Info: Info
Lensing simulations: MakeProfiles
Leonhard Euler: Circles and the complex plane
less: --help
libgit2: Optional dependencies
libgit2: Gnuastro configure options
libgit2: Git wrappers
libjpeg: Optional dependencies
libjpeg: Gnuastro configure options
Library search directory: Installation directory
Library: shared: Linking
libtiff: Optional dependencies
libtiff: Gnuastro configure options
Light-year: Unit conversion operators
Light-year: Unit conversion library
Limit, object/clump magnitude: Quantifying measurement limits
Limit, surface brightness: Image surface brightness limit
Limit, surface brightness: Surface brightness limit of image
Limit, Surface brightness: MakeCatalog output
Line terminator, CRLF: Text files
Linear spatial filtering: Convolution process
Linked list: Linked lists
Linked list: FITS header keywords
Linking: Linking
Linking: Dynamic: Linking
Linking: dynamic: Linking
Linking: Static: Linking
Linux: New to GNU/Linux?
Linux kernel: Configure and build in RAM
Linux kernel: Memory management
Linux Mint: Dependencies from package managers
Locale: Angular coverage on the sky
Long option abbreviation: Options
Long outputs: --help
Lord Kelvin: Science and its tools
Low level programming: Why C
Luminosity: Brightness flux magnitude
Lyman limit: CosmicCalculator input options
Lyman limit: Spectral lines library
Lyman-alpha: CosmicCalculator input options
Lyman-alpha: Spectral lines library
Lyman-beta: CosmicCalculator input options
Lyman-delta: CosmicCalculator input options
Lyman-epsilon: CosmicCalculator input options
Lyman-gamma: CosmicCalculator input options
Lzip: Quick start
Lzip: Release tarball

M51: Detecting large extended targets
macOS: Dependencies from package managers
MacPorts: Dependencies from package managers
Macro: Headers
Magnitude: Unit conversion library
Magnitude: Unit conversion library
Magnitude zero point: Brightness flux magnitude
Magnitude, AB: Unit conversion operators
Magnitude, AB: Brightness flux magnitude
Magnitude, AB: Unit conversion library
Magnitude, object/clump detection limit: Quantifying measurement limits
Magnitude, upper limit: Upper limit magnitude of each detection
Magnitudes from flux: Brightness flux magnitude
Mailing list archives: Report a bug
Mailing list archives: help-gnuastro mailing list
Mailing list: bug-gnuastro: Report a bug
Mailing list: bug-gnuastro: Gnuastro project webpage
Mailing list: gnuastro-commits: Developing mailing lists
Mailing list: gnuastro-commits: Commit guidelines
Mailing list: gnuastro-commits: Commit guidelines
Mailing list: gnuastro-commits: Commit guidelines
Mailing list: gnuastro-devel: Gnuastro project webpage
Mailing list: gnuastro-devel: Developing mailing lists
Mailing list: help-gnuastro: help-gnuastro mailing list
Mailing list: info-gnuastro: Version numbering
Mailing list: info-gnuastro: Announcements
Mailing list: info-gnuastro: Synchronizing
main function: Mandatory source code files
Main parameters C structure: Mandatory source code files
main.c: Mandatory source code files
main.h: Mandatory source code files
Major version number: Version numbering
Make: How to run simultaneous operations
make check: Tests
MakeProfiles (astmkprof): MakeProfiles
Making a distribution package: Developer's checklist
Making profiles pixel by pixel: Defining an ellipse and ellipsoid
Man pages: Man pages
Management hub: Gnuastro project webpage
Mandatory arguments: Arguments and options
Mandatory arguments: --usage
Manhattan distance: Dimensions
Manhattan metric: Processing options
MANPATH: Installation directory
Mask (flag) images: Bitwise operators
Matching: Matching
Mathematical morphology: Mathematical morphology operators
Mathematical morphology: Binary datasets
Matplotlib: Annotations for figure in paper
matplotlib: Invoking astconvertt
Matplotlib, Python: Program design philosophy
Matplotlib, Python: PGPLOT
Matrix: Warping basics
Matrix multiplication: Merging multiple warpings
Matrix, adjacency: Binary datasets
Maximum: Statistical operations
Mean: Quantifying signal in a tile
Mean: Statistical operations
Median: Quantifying signal in a tile
Median: Statistical operations
Memory management: Memory management
Memory management: Gnuastro's thread related functions
Memory, non-volatile: Memory management
Memory, volatile: Memory management
Memory-mapped file: Memory management
Meta-data: Fits
Metacharacters on the command-line In case your arguments or option values contain any of the shell’s meta-characters, you have to quote them.: Arguments and options
Metric: Manhattan, Taxicab, Radial: Processing options
MgII doublet: CosmicCalculator input options
MgII doublet: Spectral lines library
Michelson, Albert. A.: Science and its tools
Minimum: Statistical operations
Minor version number: Version numbering
Mixing pixel values: Convolve
Mixing pixel values: Resampling
Möbius, August. F.: Warping basics
mock.fits: Tests
Mode of a distribution: Sky value misconceptions
Modeling: Modeling and fittings
Modeling stars: Stars
Modifying print book: A4 print book
Modularity: Review of library fundamentals
Moffat beta: PSF
Moffat function: PSF
Moffat FWHM: PSF
Moments: Measuring elliptical parameters
Monte carlo integration: Sampling from a function
Mosaicing: Crop
Mosaicing: Warp
Multi-threaded operation: Qsort functions
Multi-threaded programs: Multi-threaded operations
Multiextension FITS: Viewing multiextension FITS images
Multiple file opening, reentrancy: CFITSIO
Multiplication, Matrix: Warping basics
Multiplication, matrix: Merging multiple warpings
Multithreaded programming: Multithreaded programming

Names of executables: Executable names
Names, customize: Executable names
Names, programs: Naming convention
NaN: Gnuastro text table format
NaN: Stacking operators
NaN: Invoking astwarp
NaN: Invoking aststatistics
NaN: Detection options
NaN: Library blank values
NaN: Library blank values
NaN: Library blank values
NaN: Library blank values
NaN: FITS arrays
NaN: Qsort functions
Nanomaggy: Image surface brightness limit
Nanomaggy: Unit conversion operators
Narrow-band image: Dimensionality changing operators
NASA/IPAC Extragalactic Database (NED): Available databases
Naval Observatory Merged Astrometric Dataset: Available databases
Navigating source files: Program source
Nearest-neighbor interpolation: Quantifying signal in a tile
Necessary parameters: Configuration files
NED (NASA/IPAC Extragalactic Database): Available databases
Neighborhood: Convolve
Neighbors, immediate: Binary datasets
NGC5195: Detecting large extended targets
NII doublet: CosmicCalculator input options
NII doublet: Spectral lines library
No access to super-user install: Installation directory
Noise: Quantifying signal in a tile
Noise: MakeNoise
Noise: Noise basics
Noise simulation: Photon counting noise
Noise, correlated: NoiseChisel optimization for detection
Noise, correlated: Surface brightness limit of image
Noise, instrumental: Instrumental noise
Non-commutative operations: Merging multiple warpings
Non-volatile memory: Memory management
Normalizing histogram: Histogram and Cumulative Frequency Plot
nproc: Multi-threaded operations
Number: Statistical operations
Number of CPU threads to use: Operating mode options
Number of CPU threads to use: Configuration files
Number of threads available: Multi-threaded operations
Number, version: Version numbering
Numbers, complex: Invoking astconvolve
Numbers, psuedo-random: Generating random numbers
Numbers, random: Generating random numbers

Object magnitude limit: Quantifying measurement limits
Object oriented programming: Why C
OII doublet: CosmicCalculator input options
OII doublet: Spectral lines library
OIII doublet: Spectral lines library
OIII doublet in UV: CosmicCalculator input options
OIII doublet in visible: CosmicCalculator input options
On/Off options: Options
Online help: Getting help
Opening: Achieved surface brightness level
Opening (Mathematical morphology): Binary datasets
Opening multiextension FITS: Viewing multiextension FITS images
OpenMP: Multithreaded programming
openSUSE: Dependencies from package managers
Operations on files: Data containers
Operations, non-commutative: Merging multiple warpings
Operator, structure de-reference: Mandatory source code files
Optical distortion: Warp
Optimization: Invoking astbuildprog
Optimization: Building and debugging
Optimization flag: Coding conventions
Option values: Options
Optional and mandatory tokens: --usage
Options: Invoking astarithmetic
Options common to all programs: Common options
Options to programs: Arguments and options
Options, abbreviation: Options
Options, GNU style: Options
Options, on/off: Options
Options, repeated: Options
Options, short (-) and long (--): Options
Order in search directory: Installation directory
Outlier: Invoking aststatistics
Outliers: Quantifying signal in a tile
Output file names, automatic: Automatic output
Output FITS headers: Output FITS files
Output, wrong: Report a bug
Oversample: Sufi simulates a detection
Oversampling: Oversampling

p: Mandatory source code files
Package managers: Dependencies from package managers
pacman: Dependencies from package managers
Pan-STARRS Data Release 1: Available databases
Paper size, A4: A4 print book
Paper size, US letter: A4 print book
Parametric PSFs: PSF
Parsecs: Unit conversion operators
Parsecs: Unit conversion library
PATH: Installation directory
PDF: Recognized file formats
PDF: Invoking astconvertt
PDF: EPS files
PDF: PDF files
permutation: Permutations
Permutation: Matching
PGFPlots: Annotations for figure in paper
PGFPlots (LaTeX package): Column statistics color-magnitude diagram
PGFPlots (LaTeX package): 2D histogram as an image
PGFplots in TeX or LaTeX: Program design philosophy
PGFplots in TeX or LaTeX: PGPLOT
Phase angle: Invoking astconvolve
photo-electrons: Sky value definition
Photoelectrons: Resampling
Photon counting noise: Photon counting noise
Picture element: Resampling
Pipe: --help
Pixel: Resampling
Pixel by pixel making of profiles: Defining an ellipse and ellipsoid
Pixel mixing: Convolve
Pixel mixing: Resampling
Pixel mixing: Resampling
Pixel scale: Surface brightness limit of image
Pixelated graphics: Recognized file formats
Pixels: Color
Plain text: Recognized file formats
Plot, scatter: Column statistics color-magnitude diagram
Plot: contour: Invoking aststatistics
Plotting directly in C: PGPLOT
Plugin: Linking
PNG standard: Color
Point pixels: Resampling
Point source: PSF
Point spread function: Tutorials
Point spread function: PSF
Pointers: Pointers
Poisson distribution: Photon counting noise
Poisson distribution: Photon counting noise
Poisson noise: Adding noise operators
Poisson, Siméon Denis: Photon counting noise
Polygons, Concave: Crop options
Polygons, Concave: Polygons
Polygons, Convex: Crop options
Polygons, Convex: Polygons
Polynomial interpolation: Interpolation
Portable Document format: Recognized file formats
Portable shell: Installed scripts
Position angle: Measuring elliptical parameters
Position angle: Defining an ellipse and ellipsoid
Position angle: Dimensions
POSIX threads: Implementation of pthread_barrier
POSIX Threads: Gnuastro's thread related functions
POSIX threads library: Multithreaded programming
Post-fix notation: Reverse polish notation
Postage stamp images: Crop
PostScript: Recognized file formats
PostScript: Invoking astconvertt
PostScript: EPS files
PostScript: PDF files
PostScript vs. PDF: Recognized file formats
Pre-Processor: Headers
Pre-processor macros: Headers
Precedence, configuration files: Configuration file precedence
prefix/etc/: System wide
Primary colors: Color
printf: Table input output
Prior WCS distortion: World Coordinate System
Probability density function: Histogram and Cumulative Frequency Plot
Probability density function: Sky value misconceptions
Probability density function: Photon counting noise
Profile, profile: Generate radial profile
Profiles, galaxies: Galaxies
progname-complete.bash: Mandatory source code files
progname.c, progname.h: Mandatory source code files
prognameparams: Mandatory source code files
Program crashing: Report a bug
Program names: Naming convention
Program structure convention: Program source
Programming, low level: Why C
ProgramName: Naming convention
Projective transformation: Warping basics
Proper distance: Distance on a 2D curved space
PSF: Tutorials
PSF: Sufi simulates a detection
PSF image size: PSF
PSF over-sample: Oversampling
PSF width: PSF
PSF, Moffat compared Gaussian: PSF
Psuedo-random numbers: Generating random numbers
pthread: Multi-threaded operations
pthread_barrier: Implementation of pthread_barrier
Ptolemy, Claudius: Sufi simulates a detection
Public domain: Your rights
Purity: Extract clumps and objects
Purity: Completeness limit of each detection
Puzzle solving scientist: Science and its tools
Python Matplotlib: Program design philosophy
Python Matplotlib: PGPLOT
Python programming language: Why C

qsort: Qsort functions
Quality of compression in JPEG: Invoking astconvertt
Quantile: Quantifying signal in a tile
Quantile: Invoking aststatistics
Quantile: Detection options
Quantile: Statistical operations
Quantile of the mean: Invoking aststatistics
Query: Query
Qutb al-Din al-Shirazi: Fourier series historical background

Radial metric: Processing options
Radial profile: Generate radial profile
Radial profile on ellipse: Defining an ellipse and ellipsoid
Radio astronomy: Available databases
Radius, effective: Galaxies
RAM: Memory management
RAM: Gnuastro's thread related functions
RAM: Binary datasets
Random number generation: Image surface brightness limit
Random number generator, Seed: Upper-limit settings
Random number generator, Seed: Sampling from a function
Random number generator, Seed: MakeProfiles profile settings
Random number generator, Seed: Generating random numbers
Random number generator, Seed: Generating random numbers
Random number generator, Seed: Invoking astmknoise
Random numbers: Generating random numbers
Random row selection: Invoking asttable
Raster graphics: Recognized file formats
Readout noise: Instrumental noise
Red Hat: Dependencies from package managers
Redirection in shell: Writing scripts to automate the steps
Redirection of output: --help
Redirection of output: --help
Reentrancy, multiple file opening: CFITSIO
Region file (SAO DS9): Crop options
Region file (SAO DS9): SAO DS9 library
Remembering options: Getting help
Remote operation: Command-line interface
Removing ast from executables: Executable names
Repeated options: Options
Report a bug: Gnuastro project webpage
Reproducibility: Invoking asttable
Reproducibility: Upper-limit settings
Reproducibility: Why C
Reproducible bug reports: Report a bug
Reproducible results: Command-line interface
Resampling: Resampling
Resource heavy operations: Command-line interface
Rest frame wavelength: CosmicCalculator spectral line calculations
Rest-frame: Spectral lines library
Rest-frame wavelength: CosmicCalculator input options
restrict: Generic data container
Results, wrong: Report a bug
Reverse Polish Notation: Reverse polish notation
RGB: Color
RHEL: Dependencies from package managers
Right Ascension: Column arithmetic
Right Ascension: Arithmetic on datasets
Right Ascension: Unit conversion library
Right Ascension: Unit conversion library
Ritchie, Dennis: Why C
river: Segment
Roger Cotes: Circles and the complex plane
Root access, not possible: Installation directory
Root parameter structure: Mandatory source code files
Rotation of coordinates: Warping basics
Round-off error: Invoking astconvolve
Round-off error: Polygons
Row selection, by random: Invoking asttable

Sampling: Resampling
Sampling: Sampling from a function
SAO DS9: NoiseChisel and Multiextension FITS files
SAO DS9: Finding reddest clumps and visual inspection
SAO DS9: Extract clumps and objects
SAO DS9: Invoking astconvertt
SAO DS9: Segment output
SAO DS9: SAO DS9 library
SAO DS9 region file: Crop options
SAO DS9 region file: SAO DS9 library
Saturated pixels: Interpolation operators
Saturated stars: Interpolation
Save output to file: --help
Saving binary image: Recognized file formats
Scales, coordinate: Angular coverage on the sky
Scaling: Warping basics
Scatter plot: Column statistics color-magnitude diagram
Scientific Linux: Dependencies from package managers
Scientist, puzzle solver: Science and its tools
Script, shell: Writing scripts to automate the steps
Scripts, startup: Installation directory
Scroll command-line: --help
SDSS: Image surface brightness limit
SDSS: Unit conversion operators
SDSS: Brightness flux magnitude
SDSS DR12: Available databases
SDSS Photometric Catalogue, Release 12: Available databases
SDSS, Sloan Digital Sky Survey: Detecting large extended targets
Sérsic index: Galaxies
Sérsic profile: MakeCatalog measurements
Sérsic profile: Galaxies
Sérsic, J. L.: Galaxies
Search directory for executables: Installation directory
Search directory order: Installation directory
Searching text: --help
Second moment: Measuring elliptical parameters
Section of an image: Crop
Secure shell: Command-line interface
SED, stream editor: Executable names
Seed, random number generator: Image surface brightness limit
Seed, Random number generator: Upper-limit settings
Seed, Random number generator: Sampling from a function
Seed, Random number generator: MakeProfiles profile settings
Seed, Random number generator: Generating random numbers
Seed, Random number generator: Generating random numbers
Seed, Random number generator: Invoking astmknoise
Segmentation: NoiseChisel
Segmentation: NoiseChisel
sequent WCS distortion: World Coordinate System
Setting output file names automatically: Automatic output
Setting PATH: Installation directory
Sexagesimal: Column arithmetic
Sexagesimal: Arithmetic on datasets
SHA-1 checksum: Downloading and validating input data
Shared library: Linking
Shared library versioning: Linking
Shear: Warping basics
Shebang: Writing scripts to automate the steps
Shell: Command-line interface
Shell: Arguments and options
Shell alias: Invoking astnoisechisel
Shell alias: Invoking astmkprof
Shell auto-complete: Executable names
Shell history: Writing scripts to automate the steps
Shell redirection: Writing scripts to automate the steps
Shell script: GNU Astronomy Utilities 1.0
Shell script: Writing scripts to automate the steps
Shell startup: Invoking astnoisechisel
Shell startup: Invoking astmkprof
Shell variables: Installation directory
Shell, portable: Installed scripts
Shift + PageUP and Shift + PageDown: --help
SI (International System of Units): Brightness flux magnitude
Sigma-clipping: Sky value misconceptions
Sigma-clipping: Statistical operations
Signal: Quantifying signal in a tile
Signal to noise ratio: Warp
Signal to noise ratio: Resampling
Signal-to-noise ratio: Quantifying signal in a tile
Signed integer: Numeric data types
SII doublet: CosmicCalculator input options
SII doublet: Spectral lines library
SiIII doublet: CosmicCalculator input options
Simulating noise: Photon counting noise
Simultaneous multithreading: Multi-threaded operations
Single channel CMYK: Color
SIP WCS distortion: Keyword inspection and manipulation
SIP WCS distortion: World Coordinate System
SIP WCS distortion: World Coordinate System
size_t: Ordered list of size_t
size_t: Doubly linked ordered list of size_t
Skewed Poisson distribution: Photon counting noise
Skewness: Quantifying signal in a tile
Skewness: MakeCatalog measurements
Sky: Sky value
Sky line: Interpolation
Sky value: Sky value definition
Sky value: Sky value definition
Sky value: Photon counting noise
Sloan Digital Sky Survey, SDSS: Detecting large extended targets
SLS Color: Invoking astconvertt
Software bug: Report a bug
Source code building: Dependencies from package managers
Source code compilation: Dependencies from package managers
Source file navigation: Program source
Source tree: Test scripts
Source, uncompress: Quick start
Spectrum (of astronomical source): MakeCatalog measurements
Spectrum, Fourier: Invoking astconvolve
Spline (Akima) interpolation: Interpolation
Spline (cubic) interpolation: Interpolation
Spread of a point source: PSF
SSD: Configure and build in RAM
SSH: Command-line interface
Stacking: Stacking operators
Standard deviation: Measuring elliptical parameters
Standard deviation: Statistical operations
Standard input: Input output options
Standard input: Standard input
Standard input: Automatic output
Standard input: Invoking astconvertt
Standard input: Invoking aststatistics
Standard input: Text files
Standard output: Invoking asttable
Standard output stream: Standard input
Standard, FITS: Generic data container
Stars, modeling: Stars
Startup scripts: Installation directory
Startup scripts: Generating random numbers
Startup, shell: Invoking astnoisechisel
Startup, shell: Invoking astmkprof
Static document description format: Recognized file formats
Static linking: Linking
Statistical analysis: Science and its tools
Steffen interpolation: Interpolation
Steradian: Brightness flux magnitude
Stitch multiple images: Crop
STR: Options
Stream editor, SED: Executable names
Stream: standard input: Standard input
Stream: standard output: Standard input
Stroustrup, Bjarne: Science and its tools
Stroustrup, Bjarne: Why C
Structure de-reference operator: Mandatory source code files
Structures: Headers
Subaru Telescope: Tessellation
Submit new tracker item: Report a bug
Suffix (filename): Arguments
Suffixes, EPS format: Recognized file formats
Suffixes, JPEG images: Recognized file formats
Suffixes, PDF format: Recognized file formats
Suffixes, plain text: Recognized file formats
Sufi, Abd al-rahman: Sufi simulates a detection
Sum: Statistical operations
Sum for total flux: Profile magnitude
Supergalactic coordinate system: Keyword inspection and manipulation
Supergalactic coordinate system: World Coordinate System
Superuser, not possible: Installation directory
Support request manager: Report a bug
Surface brightness: Achieved surface brightness level
Surface brightness: Brightness flux magnitude
Surface brightness: Surface brightness limit of image
Surface brightness error: Surface brightness error of each detection
Surface brightness limit: Image surface brightness limit
Surface brightness limit: Surface brightness limit of image
Surface brightness limit: MakeCatalog output
SUSE Linux Enterprise Server: Dependencies from package managers
Symbolic link: Executable names
System Cache: A note on threads
System wide configuration files: System wide

Tables FITS: Recognized table formats
Tabs are evil: Coding conventions
TAP (Table Access Protocol): Query
Task tracker: Report a bug
Taxicab metric: Processing options
Test: Quick start
Test scripts: Test scripts
Tests, error in converting images: Known issues
Tests, only one passes: Known issues
Tests, running: Tests
tests/ Building and debugging
TeX: Known issues
TeX: Recognized file formats
TeX Live: Bootstrapping dependencies
Thread-safety: Qsort functions
Thresholding: Binary datasets
TIFF format: Optional dependencies
TIFF format: Gnuastro configure options
TIFF format: Recognized file formats
TIFF format: TIFF files
TiKZ: Annotations for figure in paper
Tilde expansion as option values: Options
Time zone: Invoking astscript-sort-by-night
Time, Unix epoch: Keyword inspection and manipulation
Time, Unix epoch: Column arithmetic
Time, Unix epoch: Sort FITS files by night
Timeout: Input output options
tmpfs file system: Configure and build in RAM
Top processing source file: Mandatory source code files
Top root structure: Mandatory source code files
TPD WCS distortion: World Coordinate System
TPV WCS distortion: Keyword inspection and manipulation
TPV WCS distortion: World Coordinate System
TPV WCS distortion: World Coordinate System
Tracker: Report a bug
Tracker: Gnuastro project webpage
Trailing space: Coding conventions
Transform image: MakeProfiles
Transformation, affine: Warping basics
Transformation, projective: Warping basics
Trigonometry: Trigonometric and hyperbolic operators
Truncation radius: Profile magnitude
Tutorial: Tutorials
Type: Numeric data types

U.S. Naval Observatory CCD Astrograph Catalog: Available databases
Ubuntu: Dependencies from package managers
ui.c: Mandatory source code files
ui.h: Mandatory source code files
Uncompress source: Quick start
Undetected objects: Photon counting noise
Universal time coordinate (UTC): Invoking astscript-sort-by-night
Unix epoch time: Keyword inspection and manipulation
Unix epoch time: Column arithmetic
Unix epoch time: Sort FITS files by night
Unix epoch time: FITS header keywords
Unsigned integer: Numeric data types
Upper limit magnitude: Upper limit magnitude of each detection
US letter paper size: A4 print book
Usage pattern: --usage
User interface functions: Mandatory source code files
Using CPU threads: Multi-threaded operations
Using multiple CPU cores: Multi-threaded operations
Using multiple threads: A note on threads
UTC (Universal time coordinate): Invoking astscript-sort-by-night

Valgrind: Gnuastro configure options
Valgrind: Gnuastro configure options
Valgrind: Separate build and source directories
Valgrind: Separate build and source directories
Values to options: Options
Variance: Measuring elliptical parameters
Vatican library: Fits
Vector graphics: Recognized file formats
Verification, checksum: Downloading and validating input data
Version control: Report a bug
Version control: Version controlled source
Version control systems: Optional dependencies
Version control systems: Gnuastro configure options
Version number: Version numbering
Versioning: Shared library: Linking
Viewing trackers: Report a bug
Viridis: Colormap: Invoking astconvertt
Virtual console: Command-line interface
Visualization: Color
VizieR: Available databases
void *: Generic data container
Volatile memory: Memory management
VOTable: Available databases

Wall-clock time: A note on threads
Wassel, Caspar: Circles and the complex plane
WAT WCS distortion: World Coordinate System
Watershed algorithm: Segment
Watershed algorithm: Labeled datasets
Wavelength, rest-frame: CosmicCalculator input options
WCS distortion: Keyword inspection and manipulation
WCS distortion: World Coordinate System
WCS distortion: World Coordinate System
WCS: World Coordinate System: Column arithmetic
WCSLIB: Invoking astwarp
Weighted average: Convolve
WFC3: Warp
White space character: Configuration file format
Whole-Sky USNO-B1.0 Catalog: Available databases
Wide Field Camera 3: Warp
Wide Field Camera 3: Warping basics
William Thomson: Science and its tools
WISE All-Sky data Release: Available databases
World Coordinate System: WCSLIB
World Coordinate System: Invoking astwarp
World Coordinate System (WCS): Column arithmetic
World Coordinate System (WCS): Dimensionality changing operators
World Coordinate System (WCS): Surface brightness limit of image
Writing configuration files: Configuration file format
Wrong output: Report a bug
Wrong results: Report a bug

XDF survey: General program usage tutorial
XDF survey: Surface brightness limit of image

yum: Dependencies from package managers

Zero point magnitude: Image surface brightness limit
Zero point magnitude: Brightness flux magnitude
zypper, OpenSUSE package manager: Dependencies from package managers

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