Fitgrid(3NCARG)

NAME
fitgrid - interpolate 1d and 2d data

DESCRIPTION
Fitgrid is a package for interpolating one dimensional and two dimensional data. The package has the following functionality:

1.) Interpolating single-valued functions in one dimension.
2.) Interpolating parametric curves in the plane.
3.) Computing an interpolatory surface through a rectangular grid of functional values.
4.) Interpolating periodic functions in one dimension.
5.) Finding integrals and derivatives of interpolated functions.

SYNOPSIS

FORTRAN single precision
------------------------

 CURV1 - does set-up for CURV2.
 CURV2 - 1D interpolation for non-periodic functions.
 CURVD - derivatives for 1D functions.
 CURVI - integrals for 1D functions.
 CURVP1 - does set-up for CURVP2 .
 CURVP2 - 1D interpolation for periodic functions.
 CURVPI - integrals for periodic functions.
 CURVS - does smoothing and set-up for CURV2.
 CURVPS - does smoothing for periodic functions.
 KURV1 - does set-up for KURV2.
 KURV2 - interpolation for parametric curves.
 KURVD - derivatives for parametric curves.
 KURVP1 - set-up for KURVP2.
 KURVP2 - interpolation for closed parametric curves.
 KURVPD - derivatives for closed parametric curves.
 SURF1 - set-up for SURF2.
 SURF2 - 2D interpolation for gridded data.

C single precision:
------------------

 c_ftcurv - 1D interpolation for non-periodic functions.
 c_ftcurvd - derivatives for 1D functions.
 c_ftcurvi - integrals for 1D functions.
 c_ftcurvp - 1D interpolation for periodic functions.
 c_ftcurvpi - integrals for periodic functions.
 c_ftcurvs - does smoothing for non-periodic functions.
 c_ftcurvps - does smoothing for periodic functions.
 c_ftkurv - interpolation for parametric curves.
 c_ftkurvp - interpolation for closed parametric curves.
 c_ftkurvd - derivatives for parametric curves.
 c_ftkurvpd - interpolation for closed parametric curves.
 c_ftsurf - 2D interpolation for rectangular data.
 c_ftseti - set values for int parameters.
 c_ftgeti - get values for int parameters.
 c_ftsetr - set values for float parameters.
 c_ftgetr - get values for float parameters.
 c_ftsetc - set values for string parameters.
 c_ftgetc - get values for string parameters.
 c_ftsetfa - set values for float arrays.
 c_ftgetfa_size - get array size of float array.
 c_ftgetfa_data - get float array data.

ACCESS
To use fitgrid entries, load the NCAR Graphics library ngmath.

SEE ALSO
Individual entries, fitgrid_params

Complete documentation for fitgrid is available at URL
http://ngwww.ucar.edu/ngdoc/ng/ngmath/fitgrid/fithome.html

COPYRIGHT
Copyright (C) 2000
University Corporation for Atmospheric Research

The use of this Software is governed by a License Agreement.