ncl_c_nngetslopes man page

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

Info

March 1997-1998 UNIX NCAR GRAPHICS