NAME

c_nnpntinitd - Enter single point mode

FUNCTION PROTOTYPE

void c_nnpntinitd(int, double [], double [], double []);

SYNOPSIS

void c_nnpntinitd (npnts, x, y, z);

DESCRIPTION

npnts

The number of input data points. (npnts > 3)

x

An array of size npnts containing the X coordinates of the input data points.

y

An array of size npnts containing the Y coordinates of the input data points.

z

An array of size npnts containing the functional values of the input data points. That is, z[n] is the value of the input function at coordinate (x[n],y[n]), for 0 <= n < npnts.

USAGE

This function is invoked when you want to interpolate at individal points. It is an initialization routine that sets up some internal variables and does this initial triangulation. To actually do the interplation, use function c_nnpntd. To terminate single point mode, use the function c_nnpntendd.

ACCESS

To use c_nnpntinitd, load the NCAR Graphics library ngmath.

SEE ALSO

natgrid, natgrid_params, c_natgridd, c_nnpntd, c_nnpntendd.

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.