NNGETSLOPES(3NCARG)

NAME
NNGETSLOPES - retrieve the slope at a specified coordinate.

SYNOPSIS
CALL NNGETSLOPES (I,J,SLOPE,IER)

DESCRIPTION

I   (Integer, Input) - A subscript indexing the first dimensioned variable in the output grid of the most recent call to NATGRIDS.

J   (Integer, Input) - A subscript indexing the second dimensioned variable in the output grid of the most recent call to NATGRIDS.

SLOPE
    (Real, Output) - The slope at the grid point Z(I,J), where Z is the output grid in the most recent call to NATGRIDS.

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 natgrid_errors for details.

ACCESS
To use NNGETSLOPES, load the NCAR Graphics library ngmath.

SEE ALSO
natgrid, natgrids, natgrid_params.

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.