1Natgrid(3NCARG) NCAR GRAPHICS Natgrid(3NCARG)
2
6 Natgrid is a package for gridding 2D randomly-spaced data using a
7 natural neighbor algorithm. Single precison and double precision
8 interfaces exist in both Fortran and C.
9
11 FORTRAN single precision
12 ------------------------
13 NATGRIDS - primary function for gridding.
15 NNSETI - set INTEGER parameter values.
16 NNGETI - retrieve values for INTEGER parameters.
17 NNSETR - set REAL parameter values.
18 NNGETR - retrieve values for REAL parameters.
19 NNSETC - set CHARACTER valued parameters.
20 NNGETC - retrieve values for CHARACTER parameters.
21 NNGETSLOPES - get slope values, if calculated.
22 NNGETASPECTS - get aspect values, if calculated.
23 NNPNTINITS - initiate single point mode.
24 NNPNTS - interpolate at a single point.
25 NNPNTEND - terminate single point mode.
26 Fortran double precision (not supported on UNICOS):
28 --------------------------------------------------
29 NATGRIDD - primary function for gridding.
31 NNSETI - set INTEGER parameter values.
32 NNGETI - retrieve values for INTEGER parameters.
33 NNSETRD - set DOUBLE PRECISION parameter values.
34 NNGETRD - retrieve DOUBLE PRECISION parameters.
35 NNSETC - set CHARACTER valued parameters.
36 NNGETC - retrieve values for CHARACTER parameters.
37 NNGETSLOPED - get slope values, if calculated.
38 NNGETASPECTD - get aspect values, if calculated.
39 NNPNTINITD - initiate single point mode.
40 NNPNTD - interpolate at a single point.
41 NNPNTENDD - terminate single point mode.
42 C single precision:
44 ------------------
45 c_natgrids - primary function for gridding.
47 c_nnseti - set int parameter values.
48 c_nngeti - retrieve values for int parameters.
49 c_nnsetr - set float parameter values.
50 c_nngetr - retrieve values for float parameters.
51 c_nnsetc - set char valued parameters.
52 c_nngetc - retrieve values for char parameters.
53 c_nngetslopes - get slope values, if calculated.
54 c_nngetaspects - get aspect values, if calculated.
55 c_nnpntinits - initiate single point mode.
56 c_nnpnts - interpolate at a single point.
57 c_nnpntend - terminate single point mode.
58 C double precision:
60 ------------------
61 c_natgridd - primary function for gridding.
63 c_nnseti - set int parameter values.
64 c_nngeti - retrieve values for int parameters.
65 c_nnsetrd - set double parameter values.
66 c_nngetrd - retrieve values for double parameters.
67 c_nnsetc - set char valued parameters.
68 c_nngetc - retrieve values for char parameters.
69 c_nngetsloped - get slope values, if calculated.
70 c_nngetaspectd - get aspect values, if calculated.
71 c_nnpntinitd - initiate single point mode.
72 c_nnpntd - interpolate at a single point.
73 c_nnpntendd - terminate single point mode.
74
76 To use Natgrid entries, load the NCAR Graphics library ngmath.
77
79 Individual entries, natgrid_params, natgrid_errors.
80 Complete documentation for Natgrid is available at URL
82 http://ngwww.ucar.edu/ngdoc/ng/ngmath/natgrid/nnhome.html
83 An NCL (NCAR Command Language) interface also exists for Natgrid
85 procedures.
86
88 Copyright (C) 2000
89 University Corporation for Atmospheric Research
90 This documentation is free software; you can redistribute it and/or
92 modify it under the terms of the GNU General Public License as
93 published by the Free Software Foundation; either version 2 of the
94 License, or (at your option) any later version.
95 This software is distributed in the hope that it will be useful, but
97 WITHOUT ANY WARRANTY; without even the implied warranty of
98 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
99 General Public License for more details.
100 You should have received a copy of the GNU General Public License along
102 with this software; if not, write to the Free Software Foundation,
103 Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
104UNIX March 1997-1998 Natgrid(3NCARG)