.\"
.\"     $Id: nnpntinitd.m,v 1.6 2008-07-27 03:35:41 haley Exp $
.\"
.TH NNPNTINITD 3NCARG "March 1997-1998" UNIX "NCAR GRAPHICS"
.SH NAME
NNPNTINITD- Enter single point mode in double precision
.SH SYNOPSIS
CALL NNPNTINITD (NPNTS, X, Y, Z)
.SH DESCRIPTION
.IP NPNTS 12
(Integer, Input) - The number of input data points. (NPNTS > 3).
.IP X 12
(Double precison, Input) - An array of dimension NPNTS containing the X 
coordinates of the input data points.
.IP Y 12
(Double precison, Input) - An array of dimension NPNTS containing the Y 
coordinates of the input data points. 
.IP Z 12
(Double precison, Input) - An array of dimension NPNTS 
containing the functional 
values of the input data points. That is, Z(L) is the value of the 
input function at coordinate (X(L),Y(L)), for L=1,NPNTS. 
.SH USAGE
This subroutine is called 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 subroutine NNPNTD.  To terminate single point mode,
use the subroutine NNPNTENDD.
.SH ACCESS
To use NNPNTINITD, load the NCAR Graphics library ngmath.
.SH SEE ALSO
natgrid,
natgrid_params,
natgridd,
nnpntd,
nnpntendd.
.sp
Complete documentation for Natgrid is available at URL
.br
http://ngwww.ucar.edu/ngdoc/ng/ngmath/natgrid/nnhome.html
.SH COPYRIGHT
Copyright (C) 2000
.br
University Corporation for Atmospheric Research
.br

The use of this Software is governed by a License Agreement.