NAME

       NNPNTS - Interpolate at a single point

SYNOPSIS

       CALL NNPNTS (X, Y, Z)

DESCRIPTION

       X           (Real, Input) - The X coordinate of the point where interpolation is desired.

       Y           (Real, Input) - The Y coordinate of the point where interpolation is desired.

       Z           (Real, Output) - The interpolated functional value at the point (X,Y).

USAGE

       This  subroutine is called when you want to interpolate at an individal point.  NNPNTINITS
       must be called prior to calling NNPNTS.  NNPNTEND must be called to terminate single point
       mode.

ACCESS

       To use NNPNTS, load the NCAR Graphics library ngmath.

SEE ALSO

       natgrid, natgrid_params, natgrids, nnpntinits, nnpntend.

       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.