IDSFFT(3NCARG) | NCAR GRAPHICS | IDSFFT(3NCARG) |
IDSFFT - Performs smooth surface fitting when the projections of the data points in the X-Y plane are irregularly distributed in the plane.
CALL IDSFFT (MD, NDP, XD, YD, ZD, MREG, NREG, KREG,
+ XREG, YREG, ZREG, IWK, WK)
#include <ncarg/ncargC.h>
void c_idsfft (int md, int ndp, float *xd, float *yd,
float *zd, int mreg, int nreg, int kreg, float *xreg,
float *yreg, float *zreg, int *iwk, float *wk)
Between the call with MD=2 or MD=3 and the preceding call, the IWK and WK work arrays should not be disturbed.
Inadequate work space IWK and WK may may cause incorrect results.
The data points must be distinct and their projections in the X-Y plane must not be collinear; otherwise, an error return occurs.
The C-binding argument descriptions are the same as the FORTRAN
To use IDSFFT routines, load the NCAR Graphics libraries ncarg, ncarg_gks, and ncarg_c, preferably in that order.
Use the ncargex command to see the following relevant examples: ccpcldm, ccpfil, ccplbam, ccpllb, ccpllc, ccplll, ccpllo, ccpllp, ccpllt, ccpllw, ccpnet, ccppc, ccppc1, ccppc2, ccppc3, ccppc4, ccprc, ccpscam, cidsfft, fsfsgfa, cbex01.
To use IDSFFT or c_idsfft, load the NCAR Graphics libraries ncarg, ncarg_gks, and ncarg_c, preferably in that order.
See the bivar man page for a description of all Bivar error messages and/or informational messages.
Online: bivar, bivar_params, idbvip, idpltr, idgeti, idgetr, idseti, idsetr, ncarg_cbind
Hardcopy: NCAR Graphics Contouring and Mapping Tutorial
Bivar was written by Hiroshi Akima in August 1975 and rewritten by him in late 1976. In 1989, a new version of Bivar, incorporating changes described in a Rocky Mountain Journal of Mathematics was obtained from Dr. Akima, and included in NCAR Graphics with his permission. In 1995, Dave Kennison incorporated the capability of doing linear interpolation and a different kind of triangulation, put in a parameter access interface, and wrote a routine to allow the triangulation to be plotted.
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University Corporation for Atmospheric Research
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November 1995 | UNIX |