Module functions to get the current value of the statistic comparing source and background data and model values.
Double_Type get_statistic([Integer_Type])
Double_Type get_bstatistic([Integer_Type])
Error Return Value: NULL
Arguments:
(1) data set number (default 1)
The function get_statistic() returns the latest
evaluated statistic value for the given data set. (The function
get_bstatistic() does so for the appropriate background
data set and background model.)
(Note that this function is not the same as get_statistics(),
which returns an array showing the value of the fit statistic in
each bin. This function returns the sum of the values in the
array returned by get_statistics().)
See the related Sherpa command
GOODNESS for more information.
sherpa> get_statistic()
638.148
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get_arf_axes,
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get_coord,
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get_qvalue,
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