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.
