1DSGRID2S(3NCARG)                 NCAR GRAPHICS                DSGRID2S(3NCARG)
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NAME

6       DSGRID2S - primary single precision Fortran entry for 2D gridding
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SYNOPSIS

9       CALL DSGRID2S (NPNTS, X, Y, Z, NUMXOUT, NUMYOUT, XO, YO, ZO, IER)
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DESCRIPTION

12       NPNTS       (Integer, Input) - The number of input data points.
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14       X           (Real,  Input)  -  An array containing the X coordinates of
15                   the input data points.
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17       Y           (Real, Input) - An array containing the  Y  coordinates  of
18                   the input data points.
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20       Z           (Real,  Input)  - An array containing the functional values
21                   of the input data points. That is, Z(L) is the value of the
22                   input function at coordinate (X(L),Y(L)), for L=1,NPNTS.
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24       NUMXOUT     (Integer,  Input)  -  The  number of X values in the output
25                   grid.
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27       NUMYOUT     (Integer, Input) - The number of Y  values  in  the  output
28                   grid.
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30       XO          (Real,  Input)  -  An array of dimension NUMXOUT containing
31                   the X coordinates of the output data grid. The values in XO
32                   must be increasing, but need not be equally spaced.
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34       YO          (Real,  Input)  -  An array of dimension NUMYOUT containing
35                   the Y coordinates of the output data grid. The values in YO
36                   must be increasing, but need not be equally spaced.
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38       ZO          (Real,  Output)  -   A  two-dimensional  array of dimension
39                   NUMXOUT x NUMYOUT containing  the  interpolated  functional
40                   values.  ZO(I,J)  is  the  interpolated value at grid point
41                   (XO(I),YO(J)).
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43       IER         (Integer, Output) -  An  error  return  value.  If  IER  is
44                   returned as 0, then no errors were detected. If IER is non-
45                   zero, then refer to the  man  page  for  dsgrid_errors  for
46                   details.
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USAGE

49       DSGRID2S  is  the single precision gridding function for 2D data in the
50       Dsgrid package.  The behavior of DSGRID2S is controlled by  values  set
51       for  the  various  parameters  described  in dsgrid_params.  Values for
52       these parameters can be set using the subroutines DSSETI,  DSSETR,  and
53       DSSETC.
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55       In  almost  all  cases  the  ngmath  function  NATGRIDS  is superior to
56       DSGRID2S for 2D interpolation.  See  the  man  page  for  NATGRIDS  for
57       details.
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ACCESS

60       To use DSGRID2S, load the NCAR Graphics library ngmath.
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SEE ALSO

63       dsgrid, dsgrid_params, dsseti, dsgeti, dssetr, dsgetr, dssetc, dsgetc.
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65       Complete documentation for Dsgrid is available at URL
66       http://ngwww.ucar.edu/ngdoc/ng/ngmath/dsgrid/dshome.html
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69       Copyright (C) 2000
70       University Corporation for Atmospheric Research
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72       The use of this Software is governed by a License Agreement.
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76UNIX                          September 1997-1998             DSGRID2S(3NCARG)
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