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Fitgrid(3NCARG) NCAR GRAPHICS 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
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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:
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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.

March 1998 UNIX