OV-GSO-DC / dustem-wrapper_idl

Blame view

src/idl_misc/coyote_for_Dustemwrap/cgsymcat.pro 22.8 KB
Edit Raw Normal View History
6db3528a   Jean-Philippe Bernard   adding librairies... 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
 
; docformat = 'rst'
;
; NAME:
;   cgSymCat
;
; PURPOSE:
;   This function provides a symbol catalog for specifying a number of plotting symbols.
;
;******************************************************************************************;
;                                                                                          ;
;  Copyright (c) 20o6-2012, by Fanning Software Consulting, Inc. All rights reserved.      ;
;                                                                                          ;
;  Redistribution and use in source and binary forms, with or without                      ;
;  modification, are permitted provided that the following conditions are met:             ;
;                                                                                          ;
;      * Redistributions of source code must retain the above copyright                    ;
;        notice, this list of conditions and the following disclaimer.                     ;
;      * Redistributions in binary form must reproduce the above copyright                 ;
;        notice, this list of conditions and the following disclaimer in the               ;
;        documentation and/or other materials provided with the distribution.              ;
;      * Neither the name of Fanning Software Consulting, Inc. nor the names of its        ;
;        contributors may be used to endorse or promote products derived from this         ;
;        software without specific prior written permission.                               ;
;                                                                                          ;
;  THIS SOFTWARE IS PROVIDED BY FANNING SOFTWARE CONSULTING, INC. ''AS IS'' AND ANY        ;
;  EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES    ;
;  OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT     ;
;  SHALL FANNING SOFTWARE CONSULTING, INC. BE LIABLE FOR ANY DIRECT, INDIRECT,             ;
;  INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED    ;
;  TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;         ;
;  LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND             ;
;  ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT              ;
;  (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS           ;
;  SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.                            ;
;******************************************************************************************;
;
;+
; This function provides a symbol catalog for specifying a number of plotting symbols.
;
; :Categories:
;    Graphics
;    
; :Params:
;    theInSymbol: in, required, type=varies
;       The number (or name) of the symbol you wish to use. Possible values are::
;          0  : No symbol.                         NONE
;          1  : Plus sign.                         PLUSSIGN
;          2  : Asterisk.                          ASTERISK
;          3  : Dot (period).                      DOT
;          4  : Open diamond.                      OPENDIAMOND
;          5  : Open upward triangle.              OPENUPTRIANGLE
;          6  : Open square.                       OPENSQUARE
;          7  : X.                                 X
;          8  : Defined by the user with USERSYM.  USERSYM
;          9  : Open circle.                       OPENCIRCLE
;         10  : Histogram style plot.              HISTOGRAM
;         11  : Open downward triangle.            OPENDOWNTRIANGLE
;         12  : Open rightfacing triangle.         OPENRIGHTTRIANGLE
;         13  : Open leftfacing triangle.          OPENLEFTTRIANGLE
;         14  : Filled diamond.                    FILLEDDIAMOND
;         15  : Filled square.                     FILLEDSQUARE
;         16  : Filled circle.                     FILLEDCIRCLE
;         17  : Filled upward triangle.            FILLEDUPTRIANGLE
;         18  : Filled downward triangle.          FILLEDDOWNTRIANGLE
;         19  : Filled rightfacing triangle.       FILLEDRIGHTTRIANGLE
;         20  : Filled leftfacing triangle.        FILLEDLEFTTRIANGLE
;         21  : Hourglass.                         HOURGLASS
;         22  : Filled Hourglass.                  FILLEDHOURGLASS
;         23  : Bowtie.                            BOWTIE
;         24  : Filled bowtie.                     FILLEDBOWTIE
;         25  : Standing Bar.                      STANDINGBAR
;         26  : Filled Standing Bar.               FILLEDSTANDINGBAR
;         27  : Laying Bar.                        LAYINGBAR
;         28  : Filled Laying Bar.                 FILLEDLAYINGBAR
;         29  : Hat up.                            HATUP
;         30  : Hat down.                          HATDOWN
;         31  : Hat right.                         HATRIGHT
;         32  : Hat down.                          HATDOWN
;         33  : Big cross.                         BIGCROSS
;         34  : Filled big cross.                  FILLEDBIGCROSS
;         35  : Circle with plus.                  CIRCLEWITHPLUS
;         36  : Circle with X.                     CIRCLEWITHX
;         37  : Upper half circle.                 UPPERHALFCIRCLE
;         38  : Filled upper half circle.          FILLEDUPPERHALFCIRCLE
;         39  : Lower half circle.                 LOWERHALFCIRCLE
;         40  : Filled lower half circle.          FILLEDLOWERHALFCIRCLE
;         41  : Left half circle.                  LEFTHALFCIRCLE
;         42  : Filled left half circle.           FILLEDLEFTHALFCIRCLE
;         43  : Right half circle.                 RIGHTHALFCIRCLE
;         44  : Filled right half circle.          FILLEDRIGHTHALFCIRCLE
;         45  : Star.                              STAR
;         46  : Filled star.                       FILLEDSTAR
;       
; :Keywords:
;     color: in, optional, type=varies
;         Set this keyword to the color (color table index, 24-bit value, or color name) 
;         of the color desired. 
;     names: in, optional, type=boolean, default=0
;         If this keyword is set, the function returns the names of the symbols allowed.
;         The index number of the name is its symbol number.
;     thick: in, optional, type=float, default=1.0
;         Set this keyword to the thickness desired. Default is 1. 
;          
; :Examples:
; 
;    To use with normal IDL routines::
;       Plot, findgen(11), PSYM=SYMCAT(theSymbol)
;
;    To connect symbols with lines, use a negative value for the PSYM keyword::
;       Plot, findgen(11), PSYM=-SYMCAT(theSymbol)
;       
;    To use with Coyote Library routines, you can call SYMCAT indirectly::
;       cgPlot, findgne(11), PSYM=16, SYMCOLOR='dodger blue'
;       
; :Author:
;    FANNING SOFTWARE CONSULTING::
;       David W. Fanning 
;       1645 Sheely Drive
;       Fort Collins, CO 80526 USA
;       Phone: 970-221-0438
;       E-mail: david@idlcoyote.com
;       Coyote's Guide to IDL Programming: http://www.idlcoyote.com
;
; :History:
;    Change History::
;       Written by David W. Fanning, 2 September 2006. Loosely based on the
;          program MC_SYMBOL introduced on the IDL newsgroup 1 September 2006,
;          and MPI_PLOTCONFIG__DEFINE from the Coyote Library.
;       Modified to allow PSYM=8 and PSYM=10 to have their normal meanings. This shifted 
;       previous symbols by two values from their old meanings. For example, an hourglass 
;       went from symbol number 19 to 21. 2 October 2006. DWF. 
;       Whoops! Added two symbols but forgot to change limits to allow for them. 4 May 2007. DWF.
;       Added THICK keyword. 21 Aug 2007. DWF.
;       Added COLOR keyword and made THICK keyword apply to all symbols. 11 Nov 2008. DWF.
;       If you are using USERSYM, the "color" can get "stuck" on the last color used to draw
;          a symbol. To "unstick" the color,  you have to call USERSYM without a color keyword
;          before calling it again with a color keyword. This is, without a doubt, the strangest
;          bug I've ever seen in IDL! 20 June 2012. DWF.
;       Changed the way I "unstick" the color from calling USERSYM to calling SYMCAT. This
;          avoids a problem in changing the symbol when SYMCAT is used (unnecessarily) to pass
;          a symbol into Coyote Graphics programs. 9 July 2012. DWF.
;       Added the ability (via Jack Saba) to ask for symbols by name. 17 July 2012. DWF.
;       Added the ability to ask for the color by name. 17 July 2012. DWF.
;       Renamed to cgSYMCAT from SYMCAT. 17 July 2012. DWF.
;       The previous problem with USERSYM colors "sticking" turned out to be a problem
;           with cgGraphicsKeywords, so I removed previous "fix". 18 July 2012. DWF.
;       Modified the program to allow a "negative" string to be used as the symbol name
;           (e.g., PSYM="-star"). 30 July 2012. DWF.
;       Modified to use 36 points in circle, rather than 72. 10 May 2013. DWF.
;
; :Copyright:
;     Copyright (c) 2006-2012, Fanning Software Consulting, Inc.
;-
FUNCTION cgSymCat, theInSymbol, COLOR=color, NAMES=names, THICK=thick

   On_Error, 2
   
   IF Keyword_Set(names) THEN BEGIN
      names = [ $
         'None', $
         'Plus Sign', $
         'Asterisk', $
         'Dot', $
         'Open Diamond', $
         'Open Up Triangle', $
         'Open Square', $
         'X', $
         'UserSym', $
         'Open Circle', $
         'Histogram', $
         'Open Down Triangle', $
         'Open Right Triangle', $
         'Open Left Triangle', $
         'Filled Diamond', $
         'Filled Square', $
         'Filled Circle', $
         'Filled Up Triangle', $
         'Filled Down Triangle', $
         'Filled Right Triangle', $
         'Filled Left Triangle', $
         'Hourglass', $
         'Filled Hourglass', $
         'Bowtie', $
         'Filled Bowtie', $
         'Standing Bar', $
         'Filled Standing Bar', $
         'Laying Bar', $
         'Filled Laying Bar', $
         'Hat Up', $
         'Hat Down', $
         'Hat Right', $
         'Hat Left', $
         'Big Cross', $
         'Filled Big Cross', $
         'Circle Plus', $
         'Circle X', $
         'Upper Half Circle', $
         'Fillled Upper Half Circle', $
         'Lower Half Circle', $
         'Filled Lower Half Circle', $
         'Left Half Circle', $
         'Filled Left Half Circle', $
         'Right Half Circle', $
         'Filled Right Half Circle', $
         'Star', $
         'Filled Star' ]
       
       RETURN, names
   ENDIF
   
   ; Is the symbol input as a string?
   IF ( SIZE(theInSymbol,/TNAME) EQ 'STRING' ) THEN BEGIN
   
      ; Is the first character a minus sign?
      IF (StrMid(theInSymbol,0,1) EQ "-") THEN BEGIN
          aMinusString = 1
          theInSymbol = StrMid(theInSymbol,1)
      ENDIF
   
      ; Aliases defined here.
      IF StrUpCase(StrCompress(theInSymbol, /REMOVE_ALL)) EQ 'OPENUPWARDTRIANGLE' THEN theInSymbol = 'OPENUPTRIANGLE'
      IF StrUpCase(StrCompress(theInSymbol, /REMOVE_ALL)) EQ 'OPENDOWNWARDTRIANGLE' THEN theInSymbol = 'OPENDOWNTRIANGLE'
      IF StrUpCase(StrCompress(theInSymbol, /REMOVE_ALL)) EQ 'OPENRIGHTWARDTRIANGLE' THEN theInSymbol = 'OPENRIGHTTRIANGLE'
      IF StrUpCase(StrCompress(theInSymbol, /REMOVE_ALL)) EQ 'OPENLEFTWARDTRIANGLE' THEN theInSymbol = 'OPENLEFTTRIANGLE'
      IF StrUpCase(StrCompress(theInSymbol, /REMOVE_ALL)) EQ 'FILLEDUPWARDTRIANGLE' THEN theInSymbol = 'FILLEDUPTRIANGLE'
      IF StrUpCase(StrCompress(theInSymbol, /REMOVE_ALL)) EQ 'FILLEDDOWNWARDTRIANGLE' THEN theInSymbol = 'FILLEDDOWNTRIANGLE'
      IF StrUpCase(StrCompress(theInSymbol, /REMOVE_ALL)) EQ 'FILLEDDOWNWARDTRIANGLE' THEN theInSymbol = 'FILLEDDOWNTRIANGLE'
      IF StrUpCase(StrCompress(theInSymbol, /REMOVE_ALL)) EQ 'FILLEDLEFTWARDTRIANGLE' THEN theInSymbol = 'FILLEDLEFTTRIANGLE'
      
      CASE StrUpCase(StrCompress(theInSymbol, /REMOVE_ALL)) OF
         '':                         theSymbol = 0
         'NONE':                     theSymbol = 0
         'PLUSSIGN':                 theSymbol = 1
         'ASTERISK':                 theSymbol = 2
         'DOT':                      theSymbol = 3
         'OPENDIAMOND':              theSymbol = 4
         'OPENUPTRIANGLE':           theSymbol = 5
         'OPENSQUARE':               theSymbol = 6
         'X':                        theSymbol = 7
         'USERSYM':                  theSymbol = 8
         'OPENCIRCLE':               theSymbol = 9
         'HISTOGRAM':                theSymbol = 10
         'OPENDOWNTRIANGLE':         theSymbol = 11
         'OPENRIGHTTRIANGLE':        theSymbol = 12
         'OPENLEFTTRIANGLE':         theSymbol = 13
         'FILLEDDIAMOND':            theSymbol = 14
         'FILLEDSQUARE':             theSymbol = 15
         'FILLEDCIRCLE':             theSymbol = 16
         'FILLEDUPTRIANGLE':         theSymbol = 17
         'FILLEDDOWNTRIANGLE':       theSymbol = 18
         'FILLEDRIGHTTRIANGLE':      theSymbol = 19
         'FILLEDLEFTTRIANGLE':       theSymbol = 20
         'HOURGLASS':                theSymbol = 21
         'FILLEDHOURGLASS':          theSymbol = 22
         'BOWTIE':                   theSymbol = 23
         'FILLEDBOWTIE':             theSymbol = 24
         'STANDINGBAR':              theSymbol = 25
         'FILLEDSTANDINGBAR':        theSymbol = 26
         'LAYINGBAR':                theSymbol = 27
         'FILLEDLAYINGBAR':          theSymbol = 28
         'HATUP':                    theSymbol = 29
         'HATDOWN':                  theSymbol = 30
         'HATRIGHT':                 theSymbol = 31
         'HATLEFT':                  theSymbol = 32
         'BIGCROSS':                 theSymbol = 33
         'FILLEDBIGCROSS':           theSymbol = 34
         'CIRCLEPLUS':               theSymbol = 35
         'CIRCLEX':                  theSymbol = 36
         'UPPERHALFCIRCLE':          theSymbol = 37
         'FILLEDUPPERHALFCIRCLE':    theSymbol = 38
         'LOWERHALFCIRCLE':          theSymbol = 39
         'FILLEDLOWERHALFCIRCLE':    theSymbol = 40
         'LEFTHALFCIRCLE':           theSymbol = 41
         'FILLEDLEFTHALFCIRCLE':     theSymbol = 42
         'RIGHTHALFCIRCLE':          theSymbol = 43
         'FILLEDRIGHTHALFCIRCLE':    theSymbol = 44
         'STAR':                     theSymbol = 45
         'FILLEDSTAR':               theSymbol = 46
         ELSE: Message, 'Symbol not defined.'
      ENDCASE
            
   ENDIF ELSE theSymbol = theInSymbol[0]

   ; Error checking.
   IF N_Elements(theSymbol) EQ 0 THEN RETURN, 0
   IF N_Elements(thick) EQ 0 THEN thick = (!P.Thick EQ 0) ? 1 : !P.Thick
   IF (Abs(theSymbol) LT 0) OR (Abs(theSymbol) GT 46) THEN Message, 'Symbol number out of defined range.'
   theFinalSymbol = Fix(Abs(theSymbol))
   
   ; Do you have a color?
   IF N_Elements(color) NE 0 THEN BEGIN
   
      ; Is color a string?
      IF Size(color, /TNAME) EQ 'STRING' THEN thisColor = cgColor(color) ELSE thisColor = color
      
   ENDIF
   
   ; Define helper variables for creating circles.
   phi = Findgen(36) * (!PI * 2 / 36.)
   phi = [ phi, phi(0) ]

   ; Use user defined symbol by default.
   result = 8

   CASE theFinalSymbol OF

       0  : result = 0                                                                               ; No symbol.
       1  : UserSym, [1, -1, 0, 0, 0], [0, 0, 0, -1, 1], THICK=thick, COLOR=thisColor                    ; Plus sign.
       2  : result = 2                                                                               ; Asterisk.
       3  : result = 3                                                                               ; Dot (period).
       4  : UserSym, [ 0, 1, 0, -1, 0 ], [ 1, 0, -1, 0, 1 ], THICK=thick, COLOR=thisColor                ; Open diamond.
       5  : UserSym, [ -1, 0, 1, -1 ], [ -1, 1, -1, -1 ], THICK=thick, COLOR=thisColor                   ; Open upward triangle.
       6  : UserSym, [ -1, 1, 1, -1, -1 ], [ 1, 1, -1, -1, 1 ], THICK=thick, COLOR=thisColor             ; Open square.
       7  : result = 7                                                                               ; X.
       8  :                                                                                          ; User defined with USERSYM.
       9  : UserSym, cos(phi), sin(phi), THICK=thick, COLOR=thisColor                                    ; Open circle.
      10  : result = 10                                                                              ; Histogram type plot.
      11  : UserSYm, [ -1, 0, 1, -1 ], [ 1, -1, 1, 1 ], THICK=thick, COLOR=thisColor                     ; Open downward facing triangle
      12  : UserSym, [ -1, 1, -1, -1 ], [1, 0, -1, 1 ], THICK=thick, COLOR=thisColor                     ; Open rightfacing triangle.
      13  : UserSym, [ 1, -1, 1, 1 ], [1, 0, -1, 1 ], THICK=thick, COLOR=thisColor                       ; Open leftfacing triangle.
      14  : UserSym, [ 0, 1, 0, -1, 0 ], [ 1, 0, -1, 0, 1 ], /Fill, THICK=thick, COLOR=thisColor         ; Filled diamond.
      15  : UserSym, [ -1, 1, 1, -1, -1 ], [ 1, 1, -1, -1, 1 ], /Fill, THICK=thick, COLOR=thisColor      ; Filled square.
      16  : UserSym, Cos(phi), Sin(phi), /Fill, THICK=thick, COLOR=thisColor                             ; Filled circle.
      17  : UserSym, [ -1, 0, 1, -1 ], [ -1, 1, -1, -1 ], /Fill, THICK=thick, COLOR=thisColor            ; Filled upward triangle.
      18  : UserSym, [ -1, 0, 1, -1 ], [  1, -1, 1, 1 ], /Fill, THICK=thick, COLOR=thisColor             ; Filled downward triangle.
      19  : UserSym, [ -1, 1, -1, -1 ], [1, 0, -1, 1 ], /Fill, THICK=thick, COLOR=thisColor              ; Filled rightfacing triangle.
      20  : UserSym, [ 1, -1, 1, 1 ], [1, 0, -1, 1 ], /Fill, THICK=thick, COLOR=thisColor                ; Filled leftfacing triangle.
      21  : UserSym, [-1, 1,-1,1,-1], [-1,-1, 1,1,-1], THICK=thick, COLOR=thisColor                      ; Hourglass.
      22  : UserSym, [-1, 1,-1,1,-1], [-1,-1, 1,1,-1], /Fill, THICK=thick, COLOR=thisColor               ; Filled Hourglass.
      23  : UserSym, [-1,-1, 1,1,-1], [-1, 1,-1,1,-1], THICK=thick, COLOR=thisColor                      ; Bowtie.
      24  : UserSym, [-1,-1, 1,1,-1], [-1, 1,-1,1,-1], /Fill, THICK=thick, COLOR=thisColor               ; Filled bowtie.
      25  : UserSym, [-0.5,-0.5, 0.5, 0.5,-0.5], [-1, 1, 1,-1,-1], THICK=thick, COLOR=thisColor          ; Standing Bar.
      26  : UserSym, [-0.5,-0.5, 0.5, 0.5,-0.5], [-1, 1, 1,-1,-1], /Fill, THICK=thick, COLOR=thisColor   ; Filled Standing Bar.
      27  : UserSym, [-1,-1, 1, 1,-1], [-0.5, 0.5, 0.5,-0.5,-0.5], THICK=thick, COLOR=thisColor          ; Laying Bar.
      28  : UserSym, [-1,-1, 1, 1,-1], [-0.5, 0.5, 0.5,-0.5,-0.5], /Fill, THICK=thick, COLOR=thisColor   ; Filled Laying Bar.
      29  : UserSym, [-1, -0.5, -0.5, 0.5, 0.5, 1, -1], [-0.7, -0.7, 0.7, 0.7, -0.7, -0.7, -0.7], THICK=thick, COLOR=thisColor ; Hat up.
      30  : UserSym, [-1, -0.5, -0.5, 0.5, 0.5, 1, -1], [0.7, 0.7, -0.7, -0.7, 0.7, 0.7, 0.7], THICK=thick, COLOR=thisColor    ; Hat down.
      31  : UserSym, [-0.7, -0.7, 0.7, 0.7, -0.7, -0.7, -0.7], [-1, -0.5, -0.5, 0.5, 0.5, 1, -1], THICK=thick, COLOR=thisColor ; Hat right.
      32  : UserSym, [0.7, 0.7, -0.7, -0.7, 0.7, 0.7, 0.7], [-1, -0.5, -0.5, 0.5, 0.5, 1, -1], THICK=thick, COLOR=thisColor    ; Hat down.
      33  : UserSym, [1, 0.3, 0.3, -0.3, -0.3, -1, -1, -0.3, -0.3, 0.3, 0.3, 1, 1], $
                     [0.3, 0.3, 1, 1, 0.3, 0.3, -0.3, -0.3, -1, -1, -0.3, -0.3, 0.3], THICK=thick, COLOR=thisColor             ; Big cross.
      34  : UserSym, [1, 0.3, 0.3, -0.3, -0.3, -1, -1, -0.3, -0.3, 0.3, 0.3, 1, 1], $
                     [0.3, 0.3, 1, 1, 0.3, 0.3, -0.3, -0.3, -1, -1, -0.3, -0.3, 0.3], /Fill , THICK=thick, COLOR=thisColor     ; Filled big cross.
      35  : UserSym, [1,.866, .707, .500, 0,-.500,-.707,-.866,-1, $
                      -.866,-.707,-.500, 0, .500, .707, .866, 1, -1, 0, 0, 0], $
                     [0,.500, .707, .866, 1, .866, .707, .500, 0, $
                      -.500,-.707,-.866,-1,-.866,-.707,-.500, 0, 0, 0, 1, -1], THICK=thick, COLOR=thisColor                    ; Circle with plus.
      36  : UserSym, [1,.866, .707, .500, 0,-.500,-.707,-.866,-1, $
                      -.866,-.707,-.500, 0, .500, .707, .866, 1, $
                      .866,.707,-.707,    0, .707,-.707], $
                     [0,.500, .707, .866, 1, .866, .707, .500, 0, $
                      -.500,-.707,-.866,-1,-.866,-.707,-.500, 0, $
                      .500,.707,-.707,    0,-.707, .707]   , THICK=thick, COLOR=thisColor                                      ; Circle with X.
      37  : UserSym, [Cos(phi[0:18]), Cos(phi[0])], [Sin(phi[0:18]), Sin(phi[0])]-0.5, THICK=thick, COLOR=thisColor            ; Upper half circle.
      38  : UserSym, [Cos(phi[0:18]), Cos(phi[0])], [Sin(phi[0:18]), Sin(phi[0])]-0.5, /Fill, THICK=thick, COLOR=thisColor     ; Filled upper half circle.
      39  : UserSym, [Cos(phi[18:36]), Cos(phi[18])], [Sin(phi[18:36]), Sin(phi[18])]+0.5, THICK=thick, COLOR=thisColor        ; Lower half circle.
      40  : UserSym, [Cos(phi[18:36]), Cos(phi[18])], [Sin(phi[18:36]), Sin(phi[18])]+0.5, /Fill, THICK=thick, COLOR=thisColor ; Filled lower half circle.
      41  : UserSym, [Cos(phi[9:27]), Cos(phi[9])]+0.5, [Sin(phi[9:27]), Sin(phi[9])], THICK=thick, COLOR=thisColor            ; Left half circle.
      42  : UserSym, [Cos(phi[9:27]), Cos(phi[9])]+0.5, [Sin(phi[9:27]), Sin(phi[9])], /Fill, THICK=thick, COLOR=thisColor     ; Filled left half circle.
      43  : UserSym, [Cos(phi[27:36]), Cos(phi[0:9]), Cos(phi[27])]-0.5, $
                     [Sin(phi[27:36]), Sin(phi[0:9]), Sin(phi[27])], THICK=thick, COLOR=thisColor                              ; Right half circle.
      44  : UserSym, [Cos(phi[27:36]), Cos(phi[0:9]), Cos(phi[27])]-0.5, $
                     [Sin(phi[27:36]), Sin(phi[0:9]), Sin(phi[27])], /Fill, THICK=thick, COLOR=thisColor                       ; Filled right half circle.
      45  : UserSym, [-1,-.33, 0,.33,1, .33, 0,-.33,-1], $
                     [ 0, .33, 1,.33,0,-.33,-1,-.33, 0], THICK=thick, COLOR=thisColor                                          ; Star.
      46  : UserSym, [-1,-.33, 0,.33,1, .33, 0,-.33,-1], $
                     [ 0, .33, 1,.33,0,-.33,-1,-.33, 0], /Fill, THICK=thick, COLOR=thisColor                                   ; Filled star.
      ELSE: Message, 'Cannot resolve the symbol. Please specify an integer between 0 and 46.'
   ENDCASE

   ; If this is a minus string, we have to modify the result and fix the input.
   IF Keyword_Set(aMinusString) THEN BEGIN
      result = -result
      theInSymbol[0] = '-' + theInSymbol
   ENDIF
   
   RETURN, result
END ;-----------------------------------------------------------------------------------------------------------------------------