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

6       NNGETSLOPES - retrieve the slope at a specified coordinate.
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SYNOPSIS

9       CALL NNGETSLOPES (I,J,SLOPE,IER)
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DESCRIPTION

12       I           (Integer,  Input)  -  A subscript indexing the first dimen‐
13                   sioned variable in the output grid of the most recent  call
14                   to NATGRIDS.
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16       J           (Integer,  Input)  - A subscript indexing the second dimen‐
17                   sioned variable in the output grid of the most recent  call
18                   to NATGRIDS.
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20       SLOPE       (Real,  Output) - The slope at the grid point Z(I,J), where
21                   Z is the output grid in the most recent call to NATGRIDS.
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23       IER         (Integer, Output) -  An  error  return  value.  If  IER  is
24                   returned as 0, then no errors were detected. If IER is non-
25                   zero, then refer to the man  page  for  natgrid_errors  for
26                   details.
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ACCESS

29       To use NNGETSLOPES, load the NCAR Graphics library ngmath.
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SEE ALSO

32       natgrid, natgrids, natgrid_params.
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34       Complete documentation for Natgrid is available at URL
35       http://ngwww.ucar.edu/ngdoc/ng/ngmath/natgrid/nnhome.html
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38       Copyright (C) 2000
39       University Corporation for Atmospheric Research
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41       This  documentation  is  free  software; you can redistribute it and/or
42       modify it under the terms of the GNU General  Public  License  as  pub‐
43       lished  by  the  Free  Software  Foundation;  either  version  2 of the
44       License, or (at your option) any later version.
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46       This software is distributed in the hope that it will  be  useful,  but
47       WITHOUT  ANY  WARRANTY;  without  even  the  implied  warranty  of MER‐
48       CHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU  General
49       Public License for more details.
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51       You should have received a copy of the GNU General Public License along
52       with this software; if not, write  to  the  Free  Software  Foundation,
53       Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
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58UNIX                            March 1997-1998            NNGETSLOPES(3NCARG)
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