From 40e5a5811c6ffce9b0974e93cdd927cbcf60c157 Mon Sep 17 00:00:00 2001 From: Joe Hunkeler Date: Tue, 11 Aug 2015 16:51:37 -0400 Subject: Repatch (from linux) of OSX IRAF --- math/surfit/doc/islsolve.hlp | 45 ++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 45 insertions(+) create mode 100644 math/surfit/doc/islsolve.hlp (limited to 'math/surfit/doc/islsolve.hlp') diff --git a/math/surfit/doc/islsolve.hlp b/math/surfit/doc/islsolve.hlp new file mode 100644 index 00000000..752cbc19 --- /dev/null +++ b/math/surfit/doc/islsolve.hlp @@ -0,0 +1,45 @@ +.help islsolve Apr85 "Surfit Package" +.ih +NAME +islsolve -- solve the equations for a surface grid line +.ih +SYNOPSIS +include + +islsolve (sf, lineno, ier) + +.nf +pointer sf # surface grid descriptor +int lineno # surface grid line number +int ier # error code +.fi +.ih +ARGUMENTS +.ls sf +Pointer to the surface grid descriptor structure. +.le +.ls lineno +The number of the surface grid line to be added to the dataset. +.le +.ls ier +Error code returned by the fitting routines. The options are OK, SINGULAR, +and NO_DEG_FREEDOM. If ier = SINGULAR the matrix is singular, ISLSOLVE +will compute a solution to the normal equations but one or more of the +coefficients will be zero. If ier = NO_DEG_FREEDOM, too few data points +exist for a reasonable solution to be computed and ISLSOLVE returns without +fitting the data. +.le +.ih +DESCRIPTION +ISLSOLVE computes the Cholesky factorization of the data matrix and +solves for the coefficients +of the x fitting function by forward and back substitution. +An error code is +returned by ISLSOLVE if it is unable to solve the normal equations as +formulated. +.ih +NOTES +.ih +SEE ALSO +isinit, islfit, islrefit, islaccum, islzero, issolve, isfree +.endhelp -- cgit