1c_nnpntinitd(3NCARG)             NCAR GRAPHICS            c_nnpntinitd(3NCARG)
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NAME

6       c_nnpntinitd - Enter single point mode
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FUNCTION PROTOTYPE

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

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

15       npnts       The number of input data points. (npnts > 3)
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17       x           An array of size npnts containing the X coordinates of the
18                   input data points.
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20       y           An array of size npnts containing the Y coordinates of the
21                   input data points.
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23       z           An array of size npnts containing the functional values of
24                   the input data points. That is, z[n] is the value of the
25                   input function at coordinate (x[n],y[n]), for 0 <= n <
26                   npnts.
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USAGE

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

36       To use c_nnpntinitd, load the NCAR Graphics library ngmath.
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SEE ALSO

39       natgrid, natgrid_params, c_natgridd, c_nnpntd, c_nnpntendd.
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41       Complete documentation for Natgrid is available at URL
42       http://ngwww.ucar.edu/ngdoc/ng/ngmath/natgrid/nnhome.html
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45       Copyright (C) 2000
46       University Corporation for Atmospheric Research
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48       This documentation is free software; you can redistribute it and/or
49       modify it under the terms of the GNU General Public License as
50       published by the Free Software Foundation; either version 2 of the
51       License, or (at your option) any later version.
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53       This software is distributed in the hope that it will be useful, but
54       WITHOUT ANY WARRANTY; without even the implied warranty of
55       MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
56       General Public License for more details.
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58       You should have received a copy of the GNU General Public License along
59       with this software; if not, write to the Free Software Foundation,
60       Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
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65UNIX                            March 1997-1998           c_nnpntinitd(3NCARG)
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