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.help nlstat Feb91 "Nlfit Package"
.ih
NAME
nlstat[ird] -- get an NLFIT parameter
.ih
SYNOPSIS
include <math/nlfit.h>
[ird]val = nlstat[ird] (nl, parameter)
.nf
pointer nl # curve descriptor
int parameter # parameter to be returned
.fi
.ih
ARGUMENTS
.ls nl
The pointer to the curve descriptor structure.
.le
.ls parameter
Parameter to be return. Definitions in nlfit.h are:
.nf
NLNPARAMS integer # Number of parameters
NLNFPARAMS integer # Number of fitted parameters
NLITMAX integer # Maximum number of iterations
NLITER integer # Current number of iterations
NLNPTS integer # Number of points
NLSUMSQ real/double # Current reduced chi-squared
NLOLDSQ real/double # Previous reduced chi-squared
NLLAMBDA real/double # Value of lambda factor
NLTOL real/double # Fitting tolerance in %chi-squared
NLSCATTER real/double # Mean scatter in the fit
.fi
.le
.ih
DESCRIPTION
The values of integer, real or double parameters are returned.
The parameters include the number of parameters, the number of fitted
parameters, the maximum number of iterations, the number of iterations,
the total number of points, the current chi-squared, the previous
chi-squared, the lambda factor, the fitting tolerance and the fitted
scatter term.
.ih
EXAMPLES
.nf
include <math/nlfit.h>
int nlstati()
call malloc (buf, nlstati (nl, NLNPARAMS), TY_REAL)
call nlpgetr (nl, Memr[buf], nparams)
.fi
.ih
SEE ALSO
nlpget
.endhelp
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