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176
177 <h1>ImageMagick Display Command-line Tool</h1>
178 <p class="navigation-index">[<a href="display.html#usage">Example Usage</a> • <a href="display.html#options">Option Summary</a>]</p>
179
180 <div class="doc-section">
181 <p>Use the <code>display</code> program to display an image or image sequence on any X server.  See <a href="command-line-processing.html">Command Line Processing</a> for advice on how to structure your <code>display</code> command or see below for example usages of the command.</p>
182 </div>
183
184 <h2><a id="usage"></a>Example Usage</h2>
185 <div class="doc-section">
186
187 <p>We list a few examples of the <code>display</code> command here to illustrate its usefulness and ease of use.  To get started, lets display an image in the JPEG format:</p>
188
189 <p class="crt"><span class="crtprompt"> $ </span><span class="crtin">display rose.jpg</span></p>
190 <p>To tile a slate texture onto the root window, use:</p>
191
192 <p class="crt"><span class="crtprompt"> $ </span><span class="crtin">display -size 1280x1024 -window root slate.png</span></p>
193 <p>To display a visual image directory of all your JPEG images, use:</p>
194
195 <p class="crt"><span class="crtprompt"> $ </span><span class="crtin">display 'vid:*.jpg'</span></p>
196 <p>The display program defaults to the X screen resolution.  To display vecotr formats at their intended size, override the default resolution:</p>
197
198 <p class="crt"><span class="crtprompt"> $ </span><span class="crtin">display -density 72 drawing.svg</span></p>
199 <p>You can find additional examples of using <code>display</code> in <a href="http://www-106.ibm.com/developerworks/library/l-graf/?ca=dnt-428">Graphics from the Command Line</a>.  Further discussion is available in  <a href="http://www-106.ibm.com/developerworks/library/l-graf2/?ca=dgr-lnxw15GraphicsLine">More Graphics from the Command Line</a> and <a href="http://www.imagemagick.org/Usage/">Examples of ImageMagick Usage</a>.</p>
200
201 </div>
202
203 <h2><a id="options"></a>Option Summary</h2>
204 <div class="doc-section">
205
206 <p>The <code>display</code> command recognizes these options.  Click on an option to get more details about how that option works.</p>
207
208 <table class="doc">
209   <tbody>
210   <tr>
211     <th align="left">Option</th>
212     <th align="left">Description</th>
213   </tr>
214
215   <tr>
216     <td valign="top"><a href="command-line-options.html#alpha">-alpha</a></td>
217     <td valign="top">on, activate, off, deactivate, set, opaque, copy",
218 transparent, extract, background, or shape the alpha channel</td>
219   </tr>
220
221   <tr>
222     <td valign="top"><a href="command-line-options.html#antialias">-antialias</a></td>
223     <td valign="top">remove pixel-aliasing</td>
224   </tr>
225
226   <tr>
227     <td valign="top"><a href="command-line-options.html#authenticate">-authenticate <em class="option">value</em></a></td>
228     <td valign="top">decrypt image with this password</td>
229   </tr>
230
231   <tr>
232     <td valign="top"><a href="command-line-options.html#backdrop">-backdrop</a></td>
233     <td valign="top">display image centered on a backdrop</td>
234   </tr>
235
236   <tr>
237     <td valign="top"><a href="command-line-options.html#background">-background <em class="option">color</em></a></td>
238     <td valign="top">background color</td>
239   </tr>
240
241   <tr>
242     <td valign="top"><a href="command-line-options.html#border">-border <em class="option">geometry</em></a></td>
243     <td valign="top">surround image with a border of color</td>
244   </tr>
245
246   <tr>
247     <td valign="top"><a href="command-line-options.html#bordercolor">-bordercolor <em class="option">color</em></a></td>
248     <td valign="top">border color</td>
249   </tr>
250
251   <tr>
252     <td valign="top"><a href="command-line-options.html#channel">-channel <em class="option">type</em></a></td>
253     <td valign="top">apply option to select image channels</td>
254   </tr>
255
256   <tr>
257     <td valign="top"><a href="command-line-options.html#clip">-clip</a></td>
258     <td valign="top">clip along the first path from the 8BIM profile</td>
259   </tr>
260
261   <tr>
262     <td valign="top"><a href="command-line-options.html#clip-path">-clip-path <em class="option">id</em></a></td>
263     <td valign="top">clip along a named path from the 8BIM profile</td>
264   </tr>
265
266   <tr>
267     <td valign="top"><a href="command-line-options.html#coalesce">-coalesce</a></td>
268     <td valign="top">merge a sequence of images</td>
269   </tr>
270
271   <tr>
272     <td valign="top"><a href="command-line-options.html#colormap">-colormap <em class="option">type</em></a></td>
273     <td valign="top">Shared or Private</td>
274   </tr>
275
276   <tr>
277     <td valign="top"><a href="command-line-options.html#colors">-colors <em class="option">value</em></a></td>
278     <td valign="top">preferred number of colors in the image</td>
279   </tr>
280
281   <tr>
282     <td valign="top"><a href="command-line-options.html#colorspace">-colorspace <em class="option">type</em></a></td>
283     <td valign="top">set image colorspace</td>
284   </tr>
285
286   <tr>
287     <td valign="top"><a href="command-line-options.html#comment">-comment <em class="option">string</em></a></td>
288     <td valign="top">annotate image with comment</td>
289   </tr>
290
291   <tr>
292     <td valign="top"><a href="command-line-options.html#compress">-compress <em class="option">type</em></a></td>
293     <td valign="top">image compression type</td>
294   </tr>
295
296   <tr>
297     <td valign="top"><a href="command-line-options.html#contrast">-contrast</a></td>
298     <td valign="top">enhance or reduce the image contrast</td>
299   </tr>
300
301   <tr>
302     <td valign="top"><a href="command-line-options.html#crop">-crop <em class="option">geometry</em></a></td>
303     <td valign="top">preferred size and location of the cropped image</td>
304   </tr>
305
306   <tr>
307     <td valign="top"><a href="command-line-options.html#debug">-debug <em class="option">events</em></a></td>
308     <td valign="top">display copious debugging information</td>
309   </tr>
310
311   <tr>
312     <td valign="top"><a href="command-line-options.html#decipher">-decipher <em class="option">filename</em></a></td>
313     <td valign="top">convert cipher pixels to plain</td>
314   </tr>
315
316   <tr>
317     <td valign="top"><a href="command-line-options.html#define">-define <em class="option">format:option</em></a></td>
318     <td valign="top">define one or more image format options</td>
319   </tr>
320
321   <tr>
322     <td valign="top"><a href="command-line-options.html#delay">-delay <em class="option">value</em></a></td>
323     <td valign="top">display the next image after pausing</td>
324   </tr>
325
326   <tr>
327     <td valign="top"><a href="command-line-options.html#density">-density <em class="option">geometry</em></a></td>
328     <td valign="top">horizontal and vertical density of the image</td>
329   </tr>
330
331   <tr>
332     <td valign="top"><a href="command-line-options.html#depth">-depth <em class="option">value</em></a></td>
333     <td valign="top">image depth</td>
334   </tr>
335
336   <tr>
337     <td valign="top"><a href="command-line-options.html#despeckle">-despeckle</a></td>
338     <td valign="top">reduce the speckles within an image</td>
339   </tr>
340
341   <tr>
342     <td valign="top"><a href="command-line-options.html#display">-display <em class="option">server</em></a></td>
343     <td valign="top">get image or font from this X server</td>
344   </tr>
345
346   <tr>
347     <td valign="top"><a href="command-line-options.html#dispose">-dispose <em class="option">method</em></a></td>
348     <td valign="top">layer disposal method</td>
349   </tr>
350
351   <tr>
352     <td valign="top"><a href="command-line-options.html#dither">-dither  <em class="option">method</em></a></td>
353     <td valign="top">apply error diffusion to image</td>
354   </tr>
355
356   <tr>
357     <td valign="top"><a href="command-line-options.html#edge">-edge <em class="option">radius</em></a></td>
358     <td valign="top">apply a filter to detect edges in the image</td>
359   </tr>
360
361   <tr>
362     <td valign="top"><a href="command-line-options.html#endian">-endian <em class="option">type</em></a></td>
363     <td valign="top">endianness (MSB or LSB) of the image</td>
364   </tr>
365
366   <tr>
367     <td valign="top"><a href="command-line-options.html#enhance">-enhance</a></td>
368     <td valign="top">apply a digital filter to enhance a noisy image</td>
369   </tr>
370
371   <tr>
372     <td valign="top"><a href="command-line-options.html#equalize">-equalize</a></td>
373     <td valign="top">perform histogram equalization to an image</td>
374   </tr>
375
376   <tr>
377     <td valign="top"><a href="command-line-options.html#extract">-extract <em class="option">geometry</em></a></td>
378     <td valign="top">extract area from image</td>
379   </tr>
380
381   <tr>
382     <td valign="top"><a href="command-line-options.html#filter">-filter <em class="option">type</em></a></td>
383     <td valign="top">use this filter when resizing an image</td>
384   </tr>
385
386   <tr>
387     <td valign="top"><a href="command-line-options.html#flatten">-flatten</a></td>
388     <td valign="top">flatten a sequence of images</td>
389   </tr>
390
391   <tr>
392     <td valign="top"><a href="command-line-options.html#flip">-flip</a></td>
393     <td valign="top">flip image in the vertical direction</td>
394   </tr>
395
396   <tr>
397     <td valign="top"><a href="command-line-options.html#flop">-flop</a></td>
398     <td valign="top">flop image in the horizontal direction</td>
399   </tr>
400
401   <tr>
402     <td valign="top"><a href="command-line-options.html#frame">-frame <em class="option">geometry</em></a></td>
403     <td valign="top">surround image with an ornamental border</td>
404   </tr>
405
406   <tr>
407     <td valign="top"><a href="command-line-options.html#fuzz">-fuzz <em class="option">distance</em></a></td>
408     <td valign="top">colors within this distance are considered equal</td>
409   </tr>
410
411   <tr>
412     <td valign="top"><a href="command-line-options.html#gamma">-gamma <em class="option">value</em></a></td>
413     <td valign="top">level of gamma correction</td>
414   </tr>
415
416   <tr>
417     <td valign="top"><a href="command-line-options.html#geometry">-geometry <em class="option">geometry</em></a></td>
418     <td valign="top">preferred size or location of the image</td>
419   </tr>
420
421   <tr>
422     <td valign="top"><a href="command-line-options.html#gravity">-gravity <em class="option">geometry</em></a></td>
423     <td valign="top">horizontal and vertical backdrop placement</td>
424   </tr>
425
426   <tr>
427     <td valign="top"><a href="command-line-options.html#help">-help</a></td>
428     <td valign="top">print program options</td>
429   </tr>
430
431   <tr>
432     <td valign="top"><a href="command-line-options.html#identify">-identify</a></td>
433     <td valign="top">identify the format and characteristics of the image</td>
434   </tr>
435
436   <tr>
437     <td valign="top"><a href="command-line-options.html#immutable">-immutable <em class="option">type</em></a></td>
438     <td valign="top">prohibit image edits</td>
439   </tr>
440
441   <tr>
442     <td valign="top"><a href="command-line-options.html#interlace">-interlace <em class="option">type</em></a></td>
443     <td valign="top">type of image interlacing scheme</td>
444   </tr>
445
446   <tr>
447     <td valign="top"><a href="command-line-options.html#interpolate">-interpolate <em class="option">method</em></a></td>
448     <td valign="top">pixel color interpolation method</td>
449   </tr>
450
451   <tr>
452     <td valign="top"><a href="command-line-options.html#label">-label <em class="option">name</em></a></td>
453     <td valign="top">assign a label to an image</td>
454   </tr>
455
456   <tr>
457     <td valign="top"><a href="command-line-options.html#limit">-limit <em class="option">type value</em></a></td>
458     <td valign="top">pixel cache resource limit</td>
459   </tr>
460
461   <tr>
462     <td valign="top"><a href="command-line-options.html#log">-log <em class="option">format</em></a></td>
463     <td valign="top">format of debugging information</td>
464   </tr>
465
466   <tr>
467     <td valign="top"><a href="command-line-options.html#map">-map <em class="option">filename</em></a></td>
468     <td valign="top">transform image colors to match this set of colors</td>
469   </tr>
470
471   <tr>
472     <td valign="top"><a href="command-line-options.html#mattecolor">-mattecolor <em class="option">color</em></a></td>
473     <td valign="top">frame color</td>
474   </tr>
475
476   <tr>
477     <td valign="top"><a href="command-line-options.html#monitor">-monitor</a></td>
478     <td valign="top">monitor progress</td>
479   </tr>
480
481   <tr>
482     <td valign="top"><a href="command-line-options.html#monochrome">-monochrome</a></td>
483     <td valign="top">transform image to black and white</td>
484   </tr>
485
486   <tr>
487     <td valign="top"><a href="command-line-options.html#negate">-negate</a></td>
488     <td valign="top">replace each pixel with its complementary color </td>
489   </tr>
490
491   <tr>
492     <td valign="top"><a href="command-line-options.html#normalize">-normalize</a></td>
493     <td valign="top">transform image to span the full range of colors</td>
494   </tr>
495
496   <tr>
497     <td valign="top"><a href="command-line-options.html#page">-page <em class="option">geometry</em></a></td>
498     <td valign="top">size and location of an image canvas (setting)</td>
499   </tr>
500
501   <tr>
502     <td valign="top"><a href="command-line-options.html#profile">-profile <em class="option">filename</em></a></td>
503     <td valign="top">add, delete, or apply an image profile</td>
504   </tr>
505
506   <tr>
507     <td valign="top"><a href="command-line-options.html#quantize">-quantize <em class="option">colorspace</em></a></td>
508     <td valign="top">reduce image colors in this colorspace</td>
509   </tr>
510
511   <tr>
512     <td valign="top"><a href="command-line-options.html#quiet">-quiet</a></td>
513     <td valign="top">suppress all warning messages</td>
514   </tr>
515
516   <tr>
517     <td valign="top"><a href="command-line-options.html#raise">-raise <em class="option">value</em></a></td>
518     <td valign="top">lighten/darken image edges to create a 3-D effect</td>
519   </tr>
520
521   <tr>
522     <td valign="top"><a href="command-line-options.html#regard-warnings">-regard-warnings</a></td>
523     <td valign="top">pay attention to warning messages.</td>
524   </tr>
525
526   <tr>
527     <td valign="top"><a href="command-line-options.html#remote">-remote <em class="option">command</em></a></td>
528     <td valign="top">execute a command in an remote display process</td>
529   </tr>
530
531   <tr>
532     <td valign="top"><a href="command-line-options.html#resample">-resample <em class="option">geometry</em></a></td>
533     <td valign="top">change the resolution of an image</td>
534   </tr>
535
536   <tr>
537     <td valign="top"><a href="command-line-options.html#resize">-resize <em class="option">geometry</em></a></td>
538     <td valign="top">resize the image</td>
539   </tr>
540
541   <tr>
542     <td valign="top"><a href="command-line-options.html#respect-parentheses">-respect-parentheses</a></td>
543     <td valign="top">settings remain in effect until parenthesis boundary.</td>
544   </tr>
545
546   <tr>
547     <td valign="top"><a href="command-line-options.html#roll">-roll <em class="option">geometry</em></a></td>
548     <td valign="top">roll an image vertically or horizontally</td>
549   </tr>
550
551   <tr>
552     <td valign="top"><a href="command-line-options.html#rotate">-rotate <em class="option">degrees</em></a></td>
553     <td valign="top">apply Paeth rotation to the image</td>
554   </tr>
555
556   <tr>
557     <td valign="top"><a href="command-line-options.html#sample">-sample <em class="option">geometry</em></a></td>
558     <td valign="top">scale image with pixel sampling</td>
559   </tr>
560
561   <tr>
562     <td valign="top"><a href="command-line-options.html#sampling-factor">-sampling-factor <em class="option">geometry</em></a></td>
563     <td valign="top">horizontal and vertical sampling factor</td>
564   </tr>
565
566   <tr>
567     <td valign="top"><a href="command-line-options.html#scene">-scene <em class="option">value</em></a></td>
568     <td valign="top">image scene number</td>
569   </tr>
570
571   <tr>
572     <td valign="top"><a href="command-line-options.html#seed">-seed <em class="option">value</em></a></td>
573     <td valign="top">seed a new sequence of pseudo-random numbers</td>
574   </tr>
575
576   <tr>
577     <td valign="top"><a href="command-line-options.html#segment">-segment <em class="option">values</em></a></td>
578     <td valign="top">segment an image</td>
579   </tr>
580
581   <tr>
582     <td valign="top"><a href="command-line-options.html#set">-set <em class="option">attribute value</em></a></td>
583     <td valign="top">set an image attribute</td>
584   </tr>
585
586   <tr>
587     <td valign="top"><a href="command-line-options.html#sharpen">-sharpen <em class="option">geometry</em></a></td>
588     <td valign="top">sharpen the image</td>
589   </tr>
590
591   <tr>
592     <td valign="top"><a href="command-line-options.html#size">-size <em class="option">geometry</em></a></td>
593     <td valign="top">width and height of image</td>
594   </tr>
595
596   <tr>
597     <td valign="top"><a href="command-line-options.html#strip">-strip</a></td>
598     <td valign="top">strip image of all profiles and comments</td>
599   </tr>
600
601   <tr>
602     <td valign="top"><a href="command-line-options.html#thumbnail">-thumbnail <em class="option">geometry</em></a></td>
603     <td valign="top">create a thumbnail of the image</td>
604   </tr>
605
606   <tr>
607     <td valign="top"><a href="command-line-options.html#transparent-color">-transparent-color <em class="option">color</em></a></td>
608     <td valign="top">transparent color</td>
609   </tr>
610
611   <tr>
612     <td valign="top"><a href="command-line-options.html#black-threshold">-black-threshold <em class="option">value</em></a></td>
613     <td valign="top">force all pixels below the threshold into black</td>
614   </tr>
615
616   <tr>
617     <td valign="top"><a href="command-line-options.html#trim">-trim</a></td>
618     <td valign="top">trim image edges</td>
619   </tr>
620
621   <tr>
622     <td valign="top"><a href="command-line-options.html#update">-update <em class="option">seconds</em></a></td>
623     <td valign="top">detect when image file is modified and redisplay</td>
624   </tr>
625
626   <tr>
627     <td valign="top"><a href="command-line-options.html#verbose">-verbose</a></td>
628     <td valign="top">print detailed information about the image</td>
629   </tr>
630
631   <tr>
632     <td valign="top"><a href="command-line-options.html#version">-version</a></td>
633     <td valign="top">print version information</td>
634   </tr>
635
636   <tr>
637     <td valign="top"><a href="command-line-options.html#virtual-pixel">-virtual-pixel <em class="option">method</em></a></td>
638     <td valign="top">access method for pixels outside the boundaries of the image</td>
639   </tr>
640
641   <tr>
642     <td valign="top"><a href="command-line-options.html#visual">-visual</a></td>
643     <td valign="top">display image using this visual type</td>
644   </tr>
645
646   <tr>
647     <td valign="top"><a href="command-line-options.html#write">-window <em class="option">id</em></a></td>
648     <td valign="top">display image to background of this window</td>
649   </tr>
650
651   <tr>
652     <td valign="top"><a href="command-line-options.html#write">-window-group <em class="option">id</em></a></td>
653     <td valign="top">exit program when this window id is destroyed</td>
654   </tr>
655
656   <tr>
657     <td valign="top"><a href="command-line-options.html#write">-write <em class="option">filename</em></a></td>
658     <td valign="top">write images to this file</td>
659   </tr>
660   </tbody>
661 </table>
662
663 </div>
664
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