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.

RELATED TO fitgrid…

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.