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:
------------------

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.