man c_nngetslopes (3): 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.

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