DSGRID2S - primary single precision Fortran entry for 2D
gridding
CALL DSGRID2S (NPNTS, X, Y, Z, NUMXOUT, NUMYOUT, XO, YO, ZO,
IER)
- NPNTS
- (Integer, Input) - The number of input data points.
- X
- (Real, Input) - An array containing the X coordinates of the input data
points.
- Y
- (Real, Input) - An array containing the Y coordinates of the input data
points.
- Z
- (Real, Input) - An array containing the functional values of the input
data points. That is, Z(L) is the value of the input function at
coordinate (X(L),Y(L)), for L=1,NPNTS.
- NUMXOUT
- (Integer, Input) - The number of X values in the output grid.
- NUMYOUT
- (Integer, Input) - The number of Y values in the output grid.
- XO
- (Real, Input) - An array of dimension NUMXOUT containing the X coordinates
of the output data grid. The values in XO must be increasing, but need not
be equally spaced.
- YO
- (Real, Input) - An array of dimension NUMYOUT containing the Y coordinates
of the output data grid. The values in YO must be increasing, but need not
be equally spaced.
- ZO
- (Real, Output) - A two-dimensional array of dimension NUMXOUT x NUMYOUT
containing the interpolated functional values. ZO(I,J) is the interpolated
value at grid point (XO(I),YO(J)).
- IER
- (Integer, Output) - An error return value. If IER is returned as 0, then
no errors were detected. If IER is non-zero, then refer to the man page
for dsgrid_errors for details.
DSGRID2S is the single precision gridding function for 2D data in
the Dsgrid package. The behavior of DSGRID2S is controlled by values set for
the various parameters described in dsgrid_params. Values for these
parameters can be set using the subroutines DSSETI, DSSETR, and DSSETC.
In almost all cases the ngmath function NATGRIDS is superior to
DSGRID2S for 2D interpolation. See the man page for NATGRIDS for
details.
To use DSGRID2S, load the NCAR Graphics library ngmath.
dsgrid, dsgrid_params, dsseti, dsgeti, dssetr, dsgetr, dssetc,
dsgetc.
Complete documentation for Dsgrid is available at URL
http://ngwww.ucar.edu/ngdoc/ng/ngmath/dsgrid/dshome.html
Copyright (C) 2000
University Corporation for Atmospheric Research
The use of this Software is governed by a License Agreement.