1DSPNT2D(3NCARG)                  NCAR GRAPHICS                 DSPNT2D(3NCARG)
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NAME

6       DSPNT2D- Interpolate at a single point (or points) in 2D in double pre‐
7       cision
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SYNOPSIS

10       CALL DSPNT2D (N, X, Y, Z, M, XO, YO, ZO, IER)
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DESCRIPTION

13       N           (Integer, Input) - The number of input data points.
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15       X           (Double precision, Input) - An array containing the X coor‐
16                   dinates of the input data points.
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18       Y           (Double precision, Input) - An array containing the Y coor‐
19                   dinates of the input data points.
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21       Z           (Double precision, Input) - An array containing  the  func‐
22                   tional  values  of  the input data points. That is, Z(L) is
23                   the value of the input function at coordinate  (X(L),Y(L)),
24                   for L=1,N.
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26       M           (Integer,  Input)  - The number of output data points (this
27                   may be "1").
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29       XO          (Double precision, Input) - An array of  dimension  M  con‐
30                   taining the X coordinates of the output data. The values in
31                   XO may be in any order.
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33       YO          (Double precision, Input) - An array of  dimension  M  con‐
34                   taining the Y coordinates of the output data. The values in
35                   YO may be in any order.
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37       ZO          (Double precision, Output) - An array of dimension  M  con‐
38                   taining  the interpolated values. ZO(I) is the interpolated
39                   value at point (XO(I),YO(I)) for I=1,M.
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41       IER         (Integer, Output) -  An  error  return  value.  If  IER  is
42                   returned as 0, then no errors were detected. If IER is non-
43                   zero, then refer to the  man  page  for  dsgrid_errors  for
44                   details.
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USAGE

47       This subroutine is called when you want to interpolate at an individual
48       point or points.
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ACCESS

51       To use DSPNT2D, load the NCAR Graphics library ngmath.
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SEE ALSO

54       dsgrid, dsgrid_params.
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56       Complete documentation for Dsgrid is available at URL
57       http://ngwww.ucar.edu/ngdoc/ng/ngmath/dsgrid/dshome.html
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60       Copyright (C) 2000
61       University Corporation for Atmospheric Research
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63       The use of this Software is governed by a License Agreement.
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67UNIX                          September 1997-1998              DSPNT2D(3NCARG)
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