Using imread with PixelRegion parameter in Octave 3.2.3 on Windows XP

[Erik Waldron]

Hi,

I'm using Octave 3.2.3 on Windows XP and am trying to read in a
subsample of a 1.6k by 1.4k pixel tif image by using the 'PixelRegion'
parameter of imread.  I've tried many syntax permutations including
defining a cell array for the parameter value but always get the
following errors.  A typical command is below.  Any guidance would be
most appreciated, thanks.

Erik.

++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++

> A = imread('m611_multiframe_trial0001-0001-00000000.tif','PixelRegion', [400 
> 500], [400 500])
error: imread: invalid image file: Invalid call to __magick_read__.
Correct usage is:

 -- Function File: M = __magick_read__(FNAME, INDEX)
 -- Function File: [M, COLORMAP] = __magick_read__(FNAME, INDEX)
 -- Function File: [M, COLORMAP, ALPHA] = __magick_read__(FNAME, INDEX)


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`doc <topic>' to search the manual index.

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error: called from:
error:   C:\Octave\3.2.3_gcc-4.4.0\share\octave\3.2.3\m\image\imread.m
at line 74, column 7
octave-3.2.3.exe:2:C:\Octave\3.2.3_gcc-4.4.0\bin\workingfolder
>