Re: Image search path?

[Alasdair McAndrew]

Thank you!  I've got it working now.  I think what initially confused me is that although a full command:

x = imread('debian-logo.png');

will work, tab completion of image names doesn't work, except for images in the home directory.  What I need now is some way of indexing all the images from all directories so that tab completion works!

On Fri, Feb 6, 2015 at 1:21 AM, Mike Miller <address@hidden> wrote:

On Fri, Feb 06, 2015 at 00:36:07 +1100, Alasdair McAndrew wrote:
> I understand that "addpath" can be set up in .octaverc to add directories
> of commands to Octave.  But how do I search for images?
>
> I've tried using "IMAGE_PATH" in my .octaverc, and indeed when I call
> "dump_prefs()" the paths are all listed.  But "imread" from the image
> package can't find images in these directories.
>
> How can I add directories that are searchable by imread?

Are you setting IMAGE_PATH to a pathsep-delimited list of directories
appropriate to your OS? This works for me:

  octave:1> IMAGE_PATH (".")
  octave:2> x = imread ("debian-logo.png");
  warning: your version of GraphicsMagick limits images to 8 bits per pixel
  error: imread: cannot find debian-logo.png
  error: called from:
  error:   /usr/share/octave/3.8.2/m/image/private/__imread__.m at line 56, column 5
  error:   /usr/share/octave/3.8.2/m/image/private/imageIO.m at line 66, column 26
  error:   /usr/share/octave/3.8.2/m/image/imread.m at line 107, column 30
  octave:2> IMAGE_PATH (strjoin ({".", "/usr/share/pixmaps"}, pathsep));
  octave:3> x = imread ("debian-logo.png");
  octave:4> size (x)
  ans =

     48   48    3


--
mike

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