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| author | Joe Hunkeler <jhunkeler@gmail.com> | 2015-08-11 16:51:37 -0400 |
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| committer | Joe Hunkeler <jhunkeler@gmail.com> | 2015-08-11 16:51:37 -0400 |
| commit | 40e5a5811c6ffce9b0974e93cdd927cbcf60c157 (patch) | |
| tree | 4464880c571602d54f6ae114729bf62a89518057 /math/gsurfit/doc/gsinit.hlp | |
| download | iraf-osx-40e5a5811c6ffce9b0974e93cdd927cbcf60c157.tar.gz | |
Repatch (from linux) of OSX IRAF
Diffstat (limited to 'math/gsurfit/doc/gsinit.hlp')
| -rw-r--r-- | math/gsurfit/doc/gsinit.hlp | 64 |
1 files changed, 64 insertions, 0 deletions
diff --git a/math/gsurfit/doc/gsinit.hlp b/math/gsurfit/doc/gsinit.hlp new file mode 100644 index 00000000..3a647a8c --- /dev/null +++ b/math/gsurfit/doc/gsinit.hlp @@ -0,0 +1,64 @@ +.help gsinit Aug85 "Gsurfit Package" +.ih +NAME +gsinit -- initialize surface descriptor +.ih +SYNOPSIS +include <math/gsurfit.h> + +.nf +gsinit (sf, surface_type, xorder, yorder, xterms, xmin, xmax, + ymin, ymax) +.fi + +.nf +pointer sf # surface descriptor +int surface_type # surface function +int xorder # order of function in x +int yorder # order of function in y +int xterms # include cross-terms? (YES/NO) +real xmin # minimum x value +real xmax # maximum x value +real ymin # minimum y value +real ymax # maximum y value +.fi +.ih +ARGUMENTS +.ls sf +Pointer to the surface descriptor structure. +.le +.ls surface_type +Fitting function. Permitted values are GS_LEGENDRE and GS_CHEBYSHEV for +Legendre and Chebyshev polynomials. +.le +.ls xorder, yorder +Order of the polynomial to be fit. The order must be greater than or +equal to 1. If xorder == 1 and yorder == 1 a constant is fit to the data. +.le +.ls xterms +Set the cross-terms type? The options are GS_XNONE (the old NO option) for +no cross terms, GS_XHALF for diagonal cross terms (new option), and GS_XFULL +for full cross terms (the old YES option). +.le +.ls xmin, xmax +Minimum and maximum x values. All the x values of interest including the +data x values and the x values of any surface to be evaluated must +fall in the range xmin <= x <= xmax. +.le +.ls ymin, ymax +Minimum and maximum y values. All the y values of interest including the +data y values and the y values of any surface to be evaluated must +fall in the range ymin <= y <= ymax. +.le +.ih +DESCRIPTION +GSINIT allocates space for the surface descriptor and the arrays and vectors +used by the numerical routines. It initializes all arrays and vectors to zero +and returns the surface descriptor to the calling routine. +.ih +NOTES +GSINIT must be the first GSURFIT routine called. +.ih +SEE ALSO +gsfree +.endhelp |