1TDPRPI(3NCARG)                   NCAR GRAPHICS                  TDPRPI(3NCARG)
2
3
4

NAME

6       TDPRPI - Given a point in the projection plane, retrieve the
7       parallelogram coordinates of that point in the reference parallelogram
8       (as defined by the last call to TDPARA) that projects into it.  This
9       routine is essentially the inverse of the routine TDPRPA.
10

SYNOPSIS

12       CALL TDPRPI (XI2D, YI2D, XIPA, YIPA)
13

C-BINDING SYNOPSIS

15       #include <ncarg/ncargC.h>
16
17       void c_tdprpi(float xi2d, float yi2d, float *xipa, float *yipa)
18

DESCRIPTION

20       The arguments of TDPRPI are as follows:
21
22       XI2D and YI2D
23               (input expressions of type REAL) - the coordinates of a point
24               in the projection plane.
25
26       XIPA and YIPA
27               (output variables of type REAL) - the parallelogram coordinates
28               of that point in the reference parallelogram that projects into
29               (XI2D,YI2D).  (The parallelogram is as defined by a prior call
30               to TDPARA.)
31

C-BINDING DESCRIPTION

33       The C-binding argument descriptions are the same as the FORTRAN
34       argument descriptions.
35

ACCESS

37       To use TDPRPI or c_tdprpi, load the NCAR Graphics libraries ncarg,
38       ncarg_gks, and ncarg_c, preferably in that order.
39

SEE ALSO

41       Online: tdclrs, tdctri, tddtri, tdgeti, tdgetr, tdgrds, tdgrid, tdgtrs,
42       tdinit, tditri, tdlbla, tdlbls, tdline, tdlnpa, tdmtri, tdotri, tdpack,
43       tdpack_params, tdpara, tdplch, tdprpa, tdprpt, tdseti, tdsetr, tdsort,
44       tdstri, tdstrs
45

47       Copyright (C) 1987-2007
48       University Corporation for Atmospheric Research
49
50       This documentation is free software; you can redistribute it and/or
51       modify it under the terms of the GNU General Public License as
52       published by the Free Software Foundation; either version 2 of the
53       License, or (at your option) any later version.
54
55       This software is distributed in the hope that it will be useful, but
56       WITHOUT ANY WARRANTY; without even the implied warranty of
57       MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
58       General Public License for more details.
59
60       You should have received a copy of the GNU General Public License along
61       with this software; if not, write to the Free Software Foundation,
62       Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
63
64
65
66UNIX                               July 1997                    TDPRPI(3NCARG)
Impressum