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Astronomical datasets have various dimensions, for example 1D spectra or
table columns, 2D images, or 3D Integral field data cubes. Datasets can
also have various numeric data types, depending on the operation/purpose,
for example processed images are in commonly in floating point, but their
mask images are integers using bit-wise flags to identify certain classes
of special pixels, see Numeric data types). Certain other information
about a dataset are also commonly necessary, for example the units of the
dataset, the name of the dataset and some comments. To deal with any
generic dataset, Gnuastro defines the gal_data_t as input or output.
| • Generic data container: | Definition of Gnuastro’s generic container. | |
| • Dataset size and allocation: | Functions for size and allocation. | |
| • Arrays of datasets: | Functions to help with array of datasets. | |
| • Copying datasets: | Functions to copy a dataset to a new one. |
GNU Astronomy Utilities 0.4 manual, September 2017.