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Harris Geospatial / Docs Center / Libraries / Coyote / IMAGE_DIMENSIONS

IMAGE_DIMENSIONS

IMAGE_DIMENSIONS
  The purpose of this function is to return the various dimensions of the image,
  and also to extract relevant image information via output keywords. The
  function works only with 2D and 3D (24-bit) images, with or without alpha
  channels.
 

Categories


    Utilities
   

Returns


    A vector containing the size of each dimension of the image. It is equivalent
    to calling the SIZE function with the DIMENSIONS keyword set.
     

Params


    image: in, optional, type=various
        The image variable from which information is to be obtained.
     

Keywords


    alphachannel: out, optional, type=boolean
        This keyword is set to 1 if there is an alpha channel in the image. Otherwise,
        the keyword is set to 0.
    trueindex: out, optional, type=integer
        The position of the "true color" index in the return value. Is -1 for 2D images.
    xindex: out, optional, type=integer
        The index (position) of the X dimension in the return value.
    xsize: out, optional, type=integer
        The X size of the image.
    yindex: out, optional, type=integer
        The index (position) of the Y dimension in the return value.
    ysize: out, optional, type=integer
        The Y size of the image.
       

Examples



      dims = Image_Dimensions(image24, XSize=xsize, YSize=ysize, TrueIndex=trueindex)
      Window, XSIZE=xsize, YSIZE=ysize
      TV, image24, TRUE=trueindex
     

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


Modification History


      Written by: David W. Fanning, 5 March 2003.
      Added support for alpha channel images, include ALPHACHANNEL keyword. 13 May 2009. DWF.

Copyright


    Copyright (c) 2003-2011, Fanning Software Consulting, Inc.



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