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.

COPYRIGHT

Copyright (C) 2000
University Corporation for Atmospheric Research

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