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 240 <h1>ImageMagick Display Command-line Tool</h1>
 241 <p class="navigation-index">[<a href="display.html#usage">Example Usage</a> &bull; <a href="display.html#options">Option Summary</a>]</p>
 242
 243 <div class="doc-section">
 244 <p>Use the <kbd>display</kbd> 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 <kbd>display</kbd> command or see below for example usages of the command.</p>
 245 </div>
 246
 247 <h2><a id="usage"></a>Example Usage</h2>
 248 <div class="doc-section">
 249
 250 <p>We list a few examples of the <kbd>display</kbd> command here to illustrate its usefulness and ease of use.  To get started, lets display an image in the JPEG format:</p>
 251
 252 <p class='crt'><span class="crtprompt"> $ </span><span class='crtin'>display rose.jpg</span></p>
 253 <p>To tile a slate texture onto the root window, use:</p>
 254
 255 <p class='crt'><span class="crtprompt"> $ </span><span class='crtin'>display -size 1280x1024 -window root slate.png</span></p>
 256 <p>To display a visual image directory of all your JPEG images, use:</p>
 257
 258 <p class='crt'><span class="crtprompt"> $ </span><span class='crtin'>display 'vid:*.jpg'</span></p>
 259 <p>You can find additional examples of using <kbd>display</kbd> 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>
 260
 261 </div>
 262
 263 <h2><a id="options"></a>Option Summary</h2>
 264 <div class="doc-section">
 265
 266 <p>The <kbd>display</kbd> command recognizes these options.  Click on an option to get more details about how that option works.</p>
 267
 268 <table class="doc">
 269   <tbody>
 270   <tr>
 271     <th align="left">Option</th>
 272     <th align="left">Description</th>
 273   </tr>
 274
 275   <tr>
 276     <td valign="top"><a href="command-line-options.html#alpha">-alpha</a></td>
 277     <td valign="top">on, activate, off, deactivate, set, opaque, copy",
 278 transparent, extract, background, or shape the alpha channel</td>
 279   </tr>
 280
 281   <tr>
 282     <td valign="top"><a href="command-line-options.html#antialias">-antialias</a></td>
 283     <td valign="top">remove pixel-aliasing</td>
 284   </tr>
 285
 286   <tr>
 287     <td valign="top"><a href="command-line-options.html#authenticate">-authenticate <em class="option">value</em></a></td>
 288     <td valign="top">decrypt image with this password</td>
 289   </tr>
 290
 291   <tr>
 292     <td valign="top"><a href="command-line-options.html#backdrop">-backdrop</a></td>
 293     <td valign="top">display image centered on a backdrop</td>
 294   </tr>
 295
 296   <tr>
 297     <td valign="top"><a href="command-line-options.html#background">-background <em class="option">color</em></a></td>
 298     <td valign="top">background color</td>
 299   </tr>
 300
 301   <tr>
 302     <td valign="top"><a href="command-line-options.html#border">-border <em class="option">geometry</em></a></td>
 303     <td valign="top">surround image with a border of color</td>
 304   </tr>
 305
 306   <tr>
 307     <td valign="top"><a href="command-line-options.html#bordercolor">-bordercolor <em class="option">color</em></a></td>
 308     <td valign="top">border color</td>
 309   </tr>
 310
 311   <tr>
 312     <td valign="top"><a href="command-line-options.html#channel">-channel <em class="option">type</em></a></td>
 313     <td valign="top">apply option to select image channels</td>
 314   </tr>
 315
 316   <tr>
 317     <td valign="top"><a href="command-line-options.html#clip">-clip</a></td>
 318     <td valign="top">clip along the first path from the 8BIM profile</td>
 319   </tr>
 320
 321   <tr>
 322     <td valign="top"><a href="command-line-options.html#clip-path">-clip-path <em class="option">id</em></a></td>
 323     <td valign="top">clip along a named path from the 8BIM profile</td>
 324   </tr>
 325
 326   <tr>
 327     <td valign="top"><a href="command-line-options.html#coalesce">-coalesce</a></td>
 328     <td valign="top">merge a sequence of images</td>
 329   </tr>
 330
 331   <tr>
 332     <td valign="top"><a href="command-line-options.html#colormap">-colormap <em class="option">type</em></a></td>
 333     <td valign="top">Shared or Private</td>
 334   </tr>
 335
 336   <tr>
 337     <td valign="top"><a href="command-line-options.html#colors">-colors <em class="option">value</em></a></td>
 338     <td valign="top">preferred number of colors in the image</td>
 339   </tr>
 340
 341   <tr>
 342     <td valign="top"><a href="command-line-options.html#colorspace">-colorspace <em class="option">type</em></a></td>
 343     <td valign="top">set image colorspace</td>
 344   </tr>
 345
 346   <tr>
 347     <td valign="top"><a href="command-line-options.html#comment">-comment <em class="option">string</em></a></td>
 348     <td valign="top">annotate image with comment</td>
 349   </tr>
 350
 351   <tr>
 352     <td valign="top"><a href="command-line-options.html#compress">-compress <em class="option">type</em></a></td>
 353     <td valign="top">image compression type</td>
 354   </tr>
 355
 356   <tr>
 357     <td valign="top"><a href="command-line-options.html#contrast">-contrast</a></td>
 358     <td valign="top">enhance or reduce the image contrast</td>
 359   </tr>
 360
 361   <tr>
 362     <td valign="top"><a href="command-line-options.html#crop">-crop <em class="option">geometry</em></a></td>
 363     <td valign="top">preferred size and location of the cropped image</td>
 364   </tr>
 365
 366   <tr>
 367     <td valign="top"><a href="command-line-options.html#debug">-debug <em class="option">events</em></a></td>
 368     <td valign="top">display copious debugging information</td>
 369   </tr>
 370
 371   <tr>
 372     <td valign="top"><a href="command-line-options.html#decipher">-decipher <em class="option">filename</em></a></td>
 373     <td valign="top">convert cipher pixels to plain</td>
 374   </tr>
 375
 376   <tr>
 377     <td valign="top"><a href="command-line-options.html#define">-define <em class="option">format:option</em></a></td>
 378     <td valign="top">define one or more image format options</td>
 379   </tr>
 380
 381   <tr>
 382     <td valign="top"><a href="command-line-options.html#delay">-delay <em class="option">value</em></a></td>
 383     <td valign="top">display the next image after pausing</td>
 384   </tr>
 385
 386   <tr>
 387     <td valign="top"><a href="command-line-options.html#density">-density <em class="option">geometry</em></a></td>
 388     <td valign="top">horizontal and vertical density of the image</td>
 389   </tr>
 390
 391   <tr>
 392     <td valign="top"><a href="command-line-options.html#depth">-depth <em class="option">value</em></a></td>
 393     <td valign="top">image depth</td>
 394   </tr>
 395
 396   <tr>
 397     <td valign="top"><a href="command-line-options.html#despeckle">-despeckle</a></td>
 398     <td valign="top">reduce the speckles within an image</td>
 399   </tr>
 400
 401   <tr>
 402     <td valign="top"><a href="command-line-options.html#display">-display <em class="option">server</em></a></td>
 403     <td valign="top">get image or font from this X server</td>
 404   </tr>
 405
 406   <tr>
 407     <td valign="top"><a href="command-line-options.html#dispose">-dispose <em class="option">method</em></a></td>
 408     <td valign="top">layer disposal method</td>
 409   </tr>
 410
 411   <tr>
 412     <td valign="top"><a href="command-line-options.html#dither">-dither  <em class="option">method</em></a></td>
 413     <td valign="top">apply error diffusion to image</td>
 414   </tr>
 415
 416   <tr>
 417     <td valign="top"><a href="command-line-options.html#edge">-edge <em class="option">radius</em></a></td>
 418     <td valign="top">apply a filter to detect edges in the image</td>
 419   </tr>
 420
 421   <tr>
 422     <td valign="top"><a href="command-line-options.html#endian">-endian <em class="option">type</em></a></td>
 423     <td valign="top">endianness (MSB or LSB) of the image</td>
 424   </tr>
 425
 426   <tr>
 427     <td valign="top"><a href="command-line-options.html#enhance">-enhance</a></td>
 428     <td valign="top">apply a digital filter to enhance a noisy image</td>
 429   </tr>
 430
 431   <tr>
 432     <td valign="top"><a href="command-line-options.html#equalize">-equalize</a></td>
 433     <td valign="top">perform histogram equalization to an image</td>
 434   </tr>
 435
 436   <tr>
 437     <td valign="top"><a href="command-line-options.html#extract">-extract <em class="option">geometry</em></a></td>
 438     <td valign="top">extract area from image</td>
 439   </tr>
 440
 441   <tr>
 442     <td valign="top"><a href="command-line-options.html#filter">-filter <em class="option">type</em></a></td>
 443     <td valign="top">use this filter when resizing an image</td>
 444   </tr>
 445
 446   <tr>
 447     <td valign="top"><a href="command-line-options.html#flatten">-flatten</a></td>
 448     <td valign="top">flatten a sequence of images</td>
 449   </tr>
 450
 451   <tr>
 452     <td valign="top"><a href="command-line-options.html#flip">-flip</a></td>
 453     <td valign="top">flip image in the vertical direction</td>
 454   </tr>
 455
 456   <tr>
 457     <td valign="top"><a href="command-line-options.html#flop">-flop</a></td>
 458     <td valign="top">flop image in the horizontal direction</td>
 459   </tr>
 460
 461   <tr>
 462     <td valign="top"><a href="command-line-options.html#frame">-frame <em class="option">geometry</em></a></td>
 463     <td valign="top">surround image with an ornamental border</td>
 464   </tr>
 465
 466   <tr>
 467     <td valign="top"><a href="command-line-options.html#fuzz">-fuzz <em class="option">distance</em></a></td>
 468     <td valign="top">colors within this distance are considered equal</td>
 469   </tr>
 470
 471   <tr>
 472     <td valign="top"><a href="command-line-options.html#gamma">-gamma <em class="option">value</em></a></td>
 473     <td valign="top">level of gamma correction</td>
 474   </tr>
 475
 476   <tr>
 477     <td valign="top"><a href="command-line-options.html#geometry">-geometry <em class="option">geometry</em></a></td>
 478     <td valign="top">preferred size or location of the image</td>
 479   </tr>
 480
 481   <tr>
 482     <td valign="top"><a href="command-line-options.html#gravity">-gravity <em class="option">geometry</em></a></td>
 483     <td valign="top">horizontal and vertical backdrop placement</td>
 484   </tr>
 485
 486   <tr>
 487     <td valign="top"><a href="command-line-options.html#help">-help</a></td>
 488     <td valign="top">print program options</td>
 489   </tr>
 490
 491   <tr>
 492     <td valign="top"><a href="command-line-options.html#identify">-identify</a></td>
 493     <td valign="top">identify the format and characteristics of the image</td>
 494   </tr>
 495
 496   <tr>
 497     <td valign="top"><a href="command-line-options.html#immutable">-immutable <em class="option">type</em></a></td>
 498     <td valign="top">prohibit image edits</td>
 499   </tr>
 500
 501   <tr>
 502     <td valign="top"><a href="command-line-options.html#interlace">-interlace <em class="option">type</em></a></td>
 503     <td valign="top">type of image interlacing scheme</td>
 504   </tr>
 505
 506   <tr>
 507     <td valign="top"><a href="command-line-options.html#interpolate">-interpolate <em class="option">method</em></a></td>
 508     <td valign="top">pixel color interpolation method</td>
 509   </tr>
 510
 511   <tr>
 512     <td valign="top"><a href="command-line-options.html#label">-label <em class="option">name</em></a></td>
 513     <td valign="top">assign a label to an image</td>
 514   </tr>
 515
 516   <tr>
 517     <td valign="top"><a href="command-line-options.html#limit">-limit <em class="option">type value</em></a></td>
 518     <td valign="top">pixel cache resource limit</td>
 519   </tr>
 520
 521   <tr>
 522     <td valign="top"><a href="command-line-options.html#log">-log <em class="option">format</em></a></td>
 523     <td valign="top">format of debugging information</td>
 524   </tr>
 525
 526   <tr>
 527     <td valign="top"><a href="command-line-options.html#map">-map <em class="option">filename</em></a></td>
 528     <td valign="top">transform image colors to match this set of colors</td>
 529   </tr>
 530
 531   <tr>
 532     <td valign="top"><a href="command-line-options.html#mattecolor">-mattecolor <em class="option">color</em></a></td>
 533     <td valign="top">frame color</td>
 534   </tr>
 535
 536   <tr>
 537     <td valign="top"><a href="command-line-options.html#monitor">-monitor</a></td>
 538     <td valign="top">monitor progress</td>
 539   </tr>
 540
 541   <tr>
 542     <td valign="top"><a href="command-line-options.html#monochrome">-monochrome</a></td>
 543     <td valign="top">transform image to black and white</td>
 544   </tr>
 545
 546   <tr>
 547     <td valign="top"><a href="command-line-options.html#negate">-negate</a></td>
 548     <td valign="top">replace each pixel with its complementary color </td>
 549   </tr>
 550
 551   <tr>
 552     <td valign="top"><a href="command-line-options.html#normalize">-normalize</a></td>
 553     <td valign="top">transform image to span the full range of colors</td>
 554   </tr>
 555
 556   <tr>
 557     <td valign="top"><a href="command-line-options.html#page">-page <em class="option">geometry</em></a></td>
 558     <td valign="top">size and location of an image canvas (setting)</td>
 559   </tr>
 560
 561   <tr>
 562     <td valign="top"><a href="command-line-options.html#profile">-profile <em class="option">filename</em></a></td>
 563     <td valign="top">add, delete, or apply an image profile</td>
 564   </tr>
 565
 566   <tr>
 567     <td valign="top"><a href="command-line-options.html#quantize">-quantize <em class="option">colorspace</em></a></td>
 568     <td valign="top">reduce image colors in this colorspace</td>
 569   </tr>
 570
 571   <tr>
 572     <td valign="top"><a href="command-line-options.html#quiet">-quiet</a></td>
 573     <td valign="top">suppress all warning messages</td>
 574   </tr>
 575
 576   <tr>
 577     <td valign="top"><a href="command-line-options.html#raise">-raise <em class="option">value</em></a></td>
 578     <td valign="top">lighten/darken image edges to create a 3-D effect</td>
 579   </tr>
 580
 581   <tr>
 582     <td valign="top"><a href="command-line-options.html#regard-warnings">-regard-warnings</a></td>
 583     <td valign="top">pay attention to warning messages.</td>
 584   </tr>
 585
 586   <tr>
 587     <td valign="top"><a href="command-line-options.html#remote">-remote <em class="option">command</em></a></td>
 588     <td valign="top">execute a command in an remote display process</td>
 589   </tr>
 590
 591   <tr>
 592     <td valign="top"><a href="command-line-options.html#resample">-resample <em class="option">geometry</em></a></td>
 593     <td valign="top">change the resolution of an image</td>
 594   </tr>
 595
 596   <tr>
 597     <td valign="top"><a href="command-line-options.html#resize">-resize <em class="option">geometry</em></a></td>
 598     <td valign="top">resize the image</td>
 599   </tr>
 600
 601   <tr>
 602     <td valign="top"><a href="command-line-options.html#respect-parentheses">-respect-parentheses</a></td>
 603     <td valign="top">settings remain in effect until parenthesis boundary.</td>
 604   </tr>
 605
 606   <tr>
 607     <td valign="top"><a href="command-line-options.html#roll">-roll <em class="option">geometry</em></a></td>
 608     <td valign="top">roll an image vertically or horizontally</td>
 609   </tr>
 610
 611   <tr>
 612     <td valign="top"><a href="command-line-options.html#rotate">-rotate <em class="option">degrees</em></a></td>
 613     <td valign="top">apply Paeth rotation to the image</td>
 614   </tr>
 615
 616   <tr>
 617     <td valign="top"><a href="command-line-options.html#sample">-sample <em class="option">geometry</em></a></td>
 618     <td valign="top">scale image with pixel sampling</td>
 619   </tr>
 620
 621   <tr>
 622     <td valign="top"><a href="command-line-options.html#sampling-factor">-sampling-factor <em class="option">geometry</em></a></td>
 623     <td valign="top">horizontal and vertical sampling factor</td>
 624   </tr>
 625
 626   <tr>
 627     <td valign="top"><a href="command-line-options.html#scene">-scene <em class="option">value</em></a></td>
 628     <td valign="top">image scene number</td>
 629   </tr>
 630
 631   <tr>
 632     <td valign="top"><a href="command-line-options.html#seed">-seed <em class="option">value</em></a></td>
 633     <td valign="top">seed a new sequence of pseudo-random numbers</td>
 634   </tr>
 635
 636   <tr>
 637     <td valign="top"><a href="command-line-options.html#segment">-segment <em class="option">values</em></a></td>
 638     <td valign="top">segment an image</td>
 639   </tr>
 640
 641   <tr>
 642     <td valign="top"><a href="command-line-options.html#set">-set <em class="option">attribute value</em></a></td>
 643     <td valign="top">set an image attribute</td>
 644   </tr>
 645
 646   <tr>
 647     <td valign="top"><a href="command-line-options.html#sharpen">-sharpen <em class="option">geometry</em></a></td>
 648     <td valign="top">sharpen the image</td>
 649   </tr>
 650
 651   <tr>
 652     <td valign="top"><a href="command-line-options.html#size">-size <em class="option">geometry</em></a></td>
 653     <td valign="top">width and height of image</td>
 654   </tr>
 655
 656   <tr>
 657     <td valign="top"><a href="command-line-options.html#strip">-strip</a></td>
 658     <td valign="top">strip image of all profiles and comments</td>
 659   </tr>
 660
 661   <tr>
 662     <td valign="top"><a href="command-line-options.html#thumbnail">-thumbnail <em class="option">geometry</em></a></td>
 663     <td valign="top">create a thumbnail of the image</td>
 664   </tr>
 665
 666   <tr>
 667     <td valign="top"><a href="command-line-options.html#transparent-color">-transparent-color <em class="option">color</em></a></td>
 668     <td valign="top">transparent color</td>
 669   </tr>
 670
 671   <tr>
 672     <td valign="top"><a href="command-line-options.html#black-threshold">-black-threshold <em class="option">value</em></a></td>
 673     <td valign="top">force all pixels below the threshold into black</td>
 674   </tr>
 675
 676   <tr>
 677     <td valign="top"><a href="command-line-options.html#trim">-trim</a></td>
 678     <td valign="top">trim image edges</td>
 679   </tr>
 680
 681   <tr>
 682     <td valign="top"><a href="command-line-options.html#update">-update <em class="option">seconds</em></a></td>
 683     <td valign="top">detect when image file is modified and redisplay</td>
 684   </tr>
 685
 686   <tr>
 687     <td valign="top"><a href="command-line-options.html#verbose">-verbose</a></td>
 688     <td valign="top">print detailed information about the image</td>
 689   </tr>
 690
 691   <tr>
 692     <td valign="top"><a href="command-line-options.html#version">-version</a></td>
 693     <td valign="top">print version information</td>
 694   </tr>
 695
 696   <tr>
 697     <td valign="top"><a href="command-line-options.html#virtual-pixel">-virtual-pixel <em class="option">method</em></a></td>
 698     <td valign="top">access method for pixels outside the boundaries of the image</td>
 699   </tr>
 700
 701   <tr>
 702     <td valign="top"><a href="command-line-options.html#visual">-visual</a></td>
 703     <td valign="top">display image using this visual type</td>
 704   </tr>
 705
 706   <tr>
 707     <td valign="top"><a href="command-line-options.html#write">-window <em class="option">id</em></a></td>
 708     <td valign="top">display image to background of this window</td>
 709   </tr>
 710
 711   <tr>
 712     <td valign="top"><a href="command-line-options.html#write">-window-group <em class="option">id</em></a></td>
 713     <td valign="top">exit program when this window id is destroyed</td>
 714   </tr>
 715
 716   <tr>
 717     <td valign="top"><a href="command-line-options.html#write">-write <em class="option">filename</em></a></td>
 718     <td valign="top">write images to this file</td>
 719   </tr>
 720   </tbody>
 721 </table>
 722
 723 </div>
 724
 725 </div>
 726
 727 <div id="linkbar">
 728     <span id="linkbar-west">&nbsp;</span>
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