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.TH Fitgrid 3NCARG "March 1998" UNIX "NCAR GRAPHICS"
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.SH NAME
fitgrid \- interpolate 1d and 2d data
.SH DESCRIPTION
Fitgrid is a package for interpolating one dimensional and two 
dimensional data. The package has the following functionality: 
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1.) Interpolating single-valued functions in one dimension. 
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2.) Interpolating parametric curves in the plane. 
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3.) Computing an interpolatory surface through a rectangular grid of functional
values. 
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4.) Interpolating periodic functions in one dimension. 
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5.) Finding integrals and derivatives of interpolated functions. 
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.SH SYNOPSIS
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FORTRAN single precision
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------------------------
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 CURV1   -  does set-up for CURV2. 
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 CURV2   -  1D interpolation for non-periodic functions.
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 CURVD   -  derivatives for 1D functions.
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 CURVI   -  integrals for 1D functions.
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 CURVP1  -  does set-up for CURVP2 .
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 CURVP2  -  1D interpolation for periodic functions.
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 CURVPI  -  integrals for periodic functions.
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 CURVS   -  does smoothing and set-up for CURV2.
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 CURVPS  -  does smoothing for periodic functions.
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 KURV1   -  does set-up for KURV2.
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 KURV2   -  interpolation for parametric curves.
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 KURVD   -  derivatives for parametric curves.
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 KURVP1  -  set-up for KURVP2.
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 KURVP2  -  interpolation for closed parametric curves.
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 KURVPD  -  derivatives for closed parametric curves.
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 SURF1   -  set-up for SURF2.
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 SURF2   -  2D interpolation for gridded data.
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C single precision:
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------------------
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 c_ftcurv    -  1D interpolation for non-periodic functions.
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 c_ftcurvd   -  derivatives for 1D functions.
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 c_ftcurvi   -  integrals for 1D functions.
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 c_ftcurvp   -  1D interpolation for periodic functions.
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 c_ftcurvpi  -  integrals for periodic functions.
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 c_ftcurvs   -  does smoothing for non-periodic functions.
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 c_ftcurvps  -  does smoothing for periodic functions.
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 c_ftkurv    -  interpolation for parametric curves.
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 c_ftkurvp   -  interpolation for closed parametric curves.
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 c_ftkurvd   -  derivatives for parametric curves.
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 c_ftkurvpd  -  interpolation for closed parametric curves.
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 c_ftsurf    -  2D interpolation for rectangular data.
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 c_ftseti    -  set values for int parameters.
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 c_ftgeti    -  get values for int parameters.
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 c_ftsetr    -  set values for float parameters.
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 c_ftgetr    -  get values for float parameters.
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 c_ftsetc    -  set values for string parameters.
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 c_ftgetc    -  get values for string parameters.
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 c_ftsetfa   -  set values for float arrays.
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 c_ftgetfa_size  -  get array size of float array.
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 c_ftgetfa_data  -  get float array data.
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.SH ACCESS 
To use fitgrid entries, load the NCAR Graphics library ngmath.
.SH SEE ALSO
Individual entries, fitgrid_params
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Complete documentation for fitgrid is available at URL
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http://ngwww.ucar.edu/ngdoc/ng/ngmath/fitgrid/fithome.html
.SH COPYRIGHT
Copyright (C) 2000
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University Corporation for Atmospheric Research
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The use of this Software is governed by a License Agreement.