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
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
|
.ig >>
<STYLE TYPE="text/css">
<!--
A:link{text-decoration:none}
A:visited{text-decoration:none}
A:active{text-decoration:none}
OL,UL,P,BODY,TD,TR,TH,FORM { font-family: arial,helvetica,sans-serif;; font-size:small; color: #333333; }
H1 { font-size: x-large; font-family: arial,helvetica,sans-serif; }
H2 { font-size: large; font-family: arial,helvetica,sans-serif; }
H3 { font-size: medium; font-family: arial,helvetica,sans-serif; }
H4 { font-size: small; font-family: arial,helvetica,sans-serif; }
-->
</STYLE>
<title>ploticus: proc drawcommands</title>
<body bgcolor=D0D0EE vlink=0000FF>
<br>
<br>
<center>
<table cellpadding=2 bgcolor=FFFFFF width=550><tr>
<td>
<table cellpadding=2 width=550><tr>
<td><br><h2>proc drawcommands</h2></td>
<td align=right>
<small>
<a href="../doc/welcome.html"><img src="../doc/ploticus.gif" border=0></a><br>
Version 2.33 Jun'06
</small><br><a href="../doc/scripthome.html">Scripts</a>
<td></tr></table>
</td></tr>
<td>
<br>
<br>
.>>
.TH proc_drawcommands PL "02-JUN-2006 PL ploticus.sourceforge.net"
.LP
.ig >>
<center><a href="../gallery/drawcom.htm">drawcom<br><img src="../gallery/drawcom.gif"></a></center>
.>>
.LP
\fBproc drawcommands\fR reads and executes sets of commands which specify low-level drawing operations.
.LP
The commands may be one of \fBtwo distinct types\fR:
.IP \(bu
a ploticus drawdump file
.ig >>
.>>
- a file that has been created previously by running \fCpl -drawdump\fR or \fCpl -drawdumpa\fR .
Often used with prefabs as a
.ig >>
<a href="prefabs.html#drawdump">
.>>
\0a convenient way to overlay or combine graphs.
.ig >>
</a>
.>>
.ig >>
<br><br>
.>>
.IP \(bu
ploticus draw commands
.ig >>
.>>
- a command language described below for creating
lines, polygons, and text, in either absolute space
or scaled space. May be useful as a flexible way to add annotation,
or to add graphics that the other plotting procedures cannot produce,
or to import graphics generated programatically.
.LP
If you use the \fCdumpfile\fR attribute, drawdump content is expected. Otherwise, ploticus draw commands
are expected.
.LP
See also the
.ig >>
<a href="prefab_draw.html">
.>>
\0draw prefab
.ig >>
</a>
.>>
which provides a convenient command line interface for processing drawdump files or drawcommands.
.LP
.ig >>
<br><br><br>
.>>
.SH Attributes
.LP
\fBdumpfile\fR
.ig >>
.>>
filename
.IP \0
A file containing a drawdump (as generated using \fCpl -drawdump\fR or \fCpl -drawdumpa\fR).
.IP
Security concern: user-supplied values (such as CGI variables) should not be used to build the filename, unless
proper measures are taken to detect and remove the \fC../\fR construct (used as a hack
to see higher levels of the file system).
.ig >>
<br><br>
.>>
.LP
\fBcommands\fR
.ig >>
.>>
.ig >>
<a href="attributetypes.html#text">
.>>
\0multiline-text
.ig >>
</a>
.>>
.IP \0
A list of one or more ploticus draw commands (see below). One command per line.
Ends with a blank line.
.ig >>
<br><br>
.>>
.LP
\fBfile\fR
.ig >>
.>>
\fIfilename\fR
.IP \0
A file containing ploticus draw commands (see below). May be \fCstdin\fR to
read draw commands from standard input.
.IP
Security concern: user-supplied values (such as CGI variables) should not be used to build the filename, unless
proper measures are taken to detect and remove the \fC../\fR construct (used as a hack
to see higher levels of the file system).
.ig >>
<br><br><br>
.>>
.SH Example of draw commands
For a quick tutorial on draw commands, see below.
.nf
.ft C
\0#proc drawcommands
commands:
color blue
linetype 0 2 1
mov 1 1
lin 1 2
lin 2 2
lin 1 1
.ft R
.fi
.LP
A Gallery example where \fBproc drawcommands\fR is used is
.ig >>
<a href="../gallery/drawcom.htm">
.>>
\0drawcom
.ig >>
</a>
.>>
.ig >>
<a name=commandset></a>
.>>
.ig >>
<br><br><br>
.>>
.SH The draw command set
Here is a summary of the draw command set.
The commands are interpreted, and should be given one per line.
Quoting is never used for string literals.
Note that proc drawcommands have nothing to do with proc getdata or the "current data set".
For an explanation of absolute units and scaled units, see
.ig >>
<a href="scaleunits.html">
.>>
\0scaleunits.
.ig >>
</a>
.>>
.ig >>
<br>
<br>
<table cellpadding=2 width=500 border=1>
<tr bgcolor=FFFFEC><td>Command</td><td>Description</td></tr>
.>>
.
.IP
.ig >>
</td></tr><tr><td>
.>>
mov \fIx y\fR
.ig >>
</td><td>
.>>
= move to (x,y) in absolute units
.IP
.ig >>
</td></tr><tr><td>
.>>
lin \fIx y\fR
.ig >>
</td><td>
.>>
= line to (x,y) in absolute units
.IP
.ig >>
</td></tr><tr><td>
.>>
path \fIx y\fR
.ig >>
</td><td>
.>>
= extend current polygon fill path to (x,y) in absolute units
(see also \fCfill\fR below).
.IP
.ig >>
</td></tr><tr><td>
.>>
movs, lins, paths
.ig >>
</td><td>
.>>
= same as above but for scaled units (assumes proc areadef
has already been used to set up a scaled space).
.IP
.ig >>
</td></tr><tr><td>
.>>
movp, linp, pathp
.ig >>
</td><td>
.>>
= same as above but operands may be in either
absolute space or scaled space. If an operand ends with \fC(s)\fR
it is assumed to be in scaled space; otherwise it is assumed to
be in absolute space.
.IP
.ig >>
</td></tr><tr><td>
.>>
text \fIs\fR
.ig >>
</td><td>
.>>
= display text string s left adjusted at current location.
s should not be enclosed in quotes.
.IP
.ig >>
</td></tr><tr><td>
.>>
centext \fIs\fR
.ig >>
</td><td>
.>>
= display text string s centered around current location
s should not be enclosed in quotes.
.IP
.ig >>
</td></tr><tr><td>
.>>
rightjust \fIs\fR
.ig >>
</td><td>
.>>
= display text string s right-aligned to current location
s should not be enclosed in quotes.
.IP
.ig >>
</td></tr><tr><td>
.>>
cblock \fIx1 y1 x2 y2 color outline\fR
.ig >>
</td><td>
.>>
= display a colored rectangle. The
lower left is at (x1,y1) in absolute units; upper right is at (x2,y2)
in absolute units; color is the color; outline is 1 to produce an outline, 0 not.
.IP
.ig >>
</td></tr><tr><td>
.>>
fill
.ig >>
</td><td>
.>>
= close and fill the polygon path with the current color.
.IP
.ig >>
</td></tr><tr><td>
.>>
mark
.ig >>
<a href="attributetypes.html#xy">
.>>
\0 x y
.ig >>
</a>
.>>
sym r\fR
.ig >>
</td><td>
.>>
= produce a symbol at (x,y).
sym is a graphcore data point symbol code as described
in
.ig >>
<a href="symboldetails.html">
.>>
\0symboldetails.
.ig >>
</a>
.>>
r is the radius in absolute units.
.IP
.ig >>
</td></tr><tr><td>
.>>
color \fIc\fR
.ig >>
</td><td>
.>>
= set the current color to c
.ig >>
</td></tr><tr><td>
.>>
.IP
textsize \fIp\fR
.ig >>
</td><td>
.>>
= set the current text size to p points
.IP
.ig >>
</td></tr><tr><td>
.>>
linetype style width dashscale
.ig >>
</td><td>
.>>
= set the current
.ig >>
<a href="linedetails.html">
.>>
\0line details.
.ig >>
</a>
.>>
.IP
.ig >>
</td></tr><tr><td>
.>>
clr
.ig >>
</td><td>
.>>
= clear the display
.IP
.ig >>
</td></tr><tr><td>
.>>
backcolor \fIc\fR
.ig >>
</td><td>
.>>
= set the current background color to c
.ig >>
</table>
.>>
.ig >>
<br><br><br>
.>>
.SH How to use draw commands
Suppose you have an imaginary pen,
.LP
\fCcolor blue\fR sets the pen color to blue
.br
\fCmov x1 y1\fR would move the "pen" to x1,y1 in inches from lower left corner
.br
\fClin x2 y2\fR would lower the "pen" and then draw a line to x2,y2
.br
\fClin x3 y3\fR would continue the line to x3,y3
.LP
If you don't want to use inches, you can set up a plotting area
with whatever xrange and yrange you want. Then..
.br
\fCmovs x1 y1\fR would move the pen to x1,y1 relative to xrange and yrange
.br
\fClins x2 y2\fR would lower the pen and then draw a line to x2,y2
.br
\fClins x3 y3\fR would continue the line to x3,y3
.LP
This is fine for drawing lines, but what about filled shapes?
To do shapes, you do the same thing as above, but use \fCpath\fR instead
of \fClin\fR, or \fCpaths\fR instead of \fClins\fR. When you have drawn one
shape, you fill it in using:
.br
\fCfill red\fR
.LP
Then you can begin the next shape.
.ig >>
<br>
<br>
</td></tr>
<td align=right>
<a href="../doc/welcome.html">
<img src="../doc/ploticus.gif" border=0></a><br><small>data display engine <br>
<a href="../doc/Copyright.html">Copyright Steve Grubb</a>
<br>
<br>
<center>
<img src="../gallery/all.gif">
</center>
</td></tr>
</table>
<br>
<center>
Ploticus is hosted at http://ploticus.sourceforge.net <br>
<img src="http://sourceforge.net/sflogo.php?group_id=38453" width="88" height="31" border="0" alt="SourceForge Logo">
</center>
.>>
|
