NAME

       c_nngetslopes - retrieve the slope at a specified coordinate.

FUNCTION PROTOTYPE

       void c_nngetslopes(int, int, float *, int *);

SYNOPSIS

       c_nngetslopes (row, column, slope, ier);

DESCRIPTION

       row         A subscript indexing the first dimensioned variable in the 2D grid array
                   returned from the most recent call to c_natgrids.

       column      A subscript indexing the second dimensioned variable in the 2D grid array
                   returned from the most recent call to c_natgrids.

       slope       *slope is the slope at the grid point z[i,j], where z is the output grid in
                   the most recent call to c_natgrids.

       ier         An error value. If *ier is 0, then no errors were detected. If *ier is non-
                   zero, then refer to the man page for natgrid_errors for details.

USAGE

       This routine allows you to retrieve the current value of Natgrid parameters.  For a
       complete list of parameters available in this utility, see the natgrid_params man page.

ACCESS

       To use c_nngetslopes, load the NCAR Graphics library ngmath.

SEE ALSO

       natgrid, natgrid_params, c_nngetaspects.

       Complete documentation for Natgrid is available at URL
       http://ngwww.ucar.edu/ngdoc/ng/ngmath/natgrid/nnhome.html

COPYRIGHT

       Copyright (C) 2000
       University Corporation for Atmospheric Research

       The use of this Software is governed by a License Agreement.