1WMDRRG(3NCARG) NCAR GRAPHICS WMDRRG(3NCARG)
2
6 WMDRRG - plots weather map regions (indicating "snow", "rain", etc.),
7 or solid regions indicating temperature zones.
8
10 CALL WMDRRG(N,X,Y,ITYPE,NC,XC,YC)
11
13 #include <ncarg/gks.h>
14 void c_wmdrrg(int n, float *x, float *y, char *itype, int nc, float
16 *xc, float *yc)
17
19 N (Integer, Input) - The number of points supplied in the
20 second and third arguments.
21 X (Real, Input) - The X coordinates (specified in world
23 coordinates) of N points that specify the control points of
24 a spline curve that will be fitted to represent the
25 requested region.
26 Y (Real, Input) - The Y coordinates (specified in world
28 coordinates) of N points that specify the control points of
29 a spline curve that will be fitted to represent the
30 requested region.
31 ITYPE (Character, Input) - Indicates the weather type to fill the
33 region with, or a solid color.
34 ITYPE can be one of:
36 'T' for thunderstorms
38 'SH' for showers
40 'R' for rain
42 'F' for flurries
44 'SN' for snow
46 'I' for ice
48 'INDEXnn' where the number "nn" denotes a color
50 index for a solid fill.
51 NC (Integer, input) - If NC is greater than 2, then the region
53 resulting from the spline fit to ((X(I),Y(I)),I=1,N) will
54 be clipped against the region in ((XC(I),YC(I)),I=1,NC). If
55 no clipping is to be done, then set NC equal to 1.
56 XC (Real, Input) - The X coordinates (specified in world
58 coordinates) of NC points that specify a clipping polygon
59 for the region resulting from the spline fit to
60 ((X(I),Y(I)),I=1,N), if NC is greater than 2.
61 YC (Real, Input) - The Y coordinates (specified in world
63 coordinates) of NC points that specify a clipping polygon
64 for the region resulting from the spline fit to
65 ((X(I),Y(I)),I=1,N), if NC is greater than 2.
66
68 Set the values for the appropriate internal parameters before calling
69 WMDRRG to produce the desired region. The internal parameters that con‐
70 trol the appearance of regions are: COL and RHT. As mentioned above,
71 the points specified in the X and Y arrays serve as control points for
72 a spline curve that is fitted to the input polygon. X(N) should equal
73 X(1) and Y(N) should equal Y(1).
74
76 To use WMDRRG or c_wmdrrg, load the NCAR Graphics libraries ncarg,
77 ncarg_gks, and ncarg_c, preferably in that order.
78
80 Online: wmap, wmdflt, wmgetc, wmgeti, wmgetr, wmsetc, wmseti, wmsetr,
81 wmap_params
82 Hardcopy: WMAP - A Package for Producing Daily Weather Maps and Plot‐
84 ting Station Model Data
85
87 Copyright (C) 1987-2007
88 University Corporation for Atmospheric Research
89 This documentation is free software; you can redistribute it and/or
91 modify it under the terms of the GNU General Public License as pub‐
92 lished by the Free Software Foundation; either version 2 of the
93 License, or (at your option) any later version.
94 This software is distributed in the hope that it will be useful, but
96 WITHOUT ANY WARRANTY; without even the implied warranty of MER‐
97 CHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General
98 Public License for more details.
99 You should have received a copy of the GNU General Public License along
101 with this software; if not, write to the Free Software Foundation,
102 Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
103UNIX January 1995 WMDRRG(3NCARG)