[MacPorts] #38730: octave-devel @3.6.3 GraphicsMagick limits images to 8 bits per pixel

[MacPorts]

#38730: octave-devel @3.6.3 GraphicsMagick limits images to 8 bits per pixel
--------------------+--------------------------------
 Reporter:  cwr@…   |      Owner:  macports-tickets@…
     Type:  defect  |     Status:  new
 Priority:  Normal  |  Milestone:
Component:  ports   |    Version:  2.1.3
 Keywords:          |       Port:  octave-devel
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 Is this a problem with '''Octave''' or '''GraphicsMagick'''? I need to
 read full color (24 bit per pixel) JPEG image files into Octave. When I
 try I get:

 {{{
 octave:3> TestImage = imread('test_image.jpg', 'JPEG');
 warning: your version of GraphicsMagick limits images to 8 bits per pixel
 error: imread: invalid image file: invalid conversion from string to real
 N-d array
 error: called from:
 error:   /opt/local/share/octave/3.6.3/m/image/imread.m at line 74, column
 7
 }}}

 I don't know enough about MacPorts etc., to know if the fix for this would
 be ("globally") in the port of GraphicsMagick, or ("locally") in Octave's
 dependency on GraphicsMagick. (In fact I don't understand why anyone would
 ever want to limit image files to 8 bit, but I guess that is off topic.)

 There is a note about this issue here:
 http://wiki.octave.org/GraphicsMagick

 I am running Mountain Lion (10.8.3) and Xcode 4.6.1.

 Please let me know of any suggestions for a work-around in the meantime.

-- 
Ticket URL: <https://trac.macports.org/ticket/38730>
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