2.5 Network parameters

The network parameters may be listed with the following optional attributes of an empty-element tag <parameters />

• sigma-apr = "10" value of a priori reference standard deviation—square root of reference variance (default value 10)
• conf-pr = "0.95" confidence probability used in statistical tests (dafault value 0.95)
• tol-abs = "1000" tolerance for identification of gross absolute terms in project equations (default value 1000 mm)
• sigma-act = "aposteriori" actual type of reference standard deviation use in statistical tests (aposteriori | apriori); default value is aposteriori
• update-constrained-coordinates = "no" enables user to control if coordinates of constrained points are updated in iterative adjustment. If test on linerarization fails (see Linearization), Gama tries to improve approximate coordinates of adjusted points and repeats the whole adjustment. Coordinates of constrained points are implicitly not changed during iterations.

Values of the attributes must be given either in the double-quotes ("...") or in the single quotes ('...'). There can be white spaces (spaces, tabs and new-line characters) between attribute names, values, and the equal sign.

Example

     <parameters sigma-apr = "15"
                 conf-pr   = '0.90'
                 sigma-act = "apriori"
                 update-constrained-coordinates = "no" />