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

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

SYNOPSIS

11       FORTRAN single precision
12       ------------------------
13
14        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
27       Fortran double precision (not supported on UNICOS):
28       --------------------------------------------------
29
30        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
43       C single precision:
44       ------------------
45
46        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
59       C double precision:
60       ------------------
61
62        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

ACCESS

76       To use Natgrid entries, load the NCAR Graphics library ngmath.
77

SEE ALSO

79       Individual entries, natgrid_params, natgrid_errors.
80
81       Complete documentation for Natgrid is available at URL
82       http://ngwww.ucar.edu/ngdoc/ng/ngmath/natgrid/nnhome.html
83
84       An NCL (NCAR Command Language) interface also exists for Natgrid
85       procedures.
86

88       Copyright (C) 2000
89       University Corporation for Atmospheric Research
90
91       The use of this Software is governed by a License Agreement.
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95UNIX                            March 1997-1998                Natgrid(3NCARG)
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