Re: first steps on octave

[Søren Hauberg]

Hi,
  First of all v2.1.64 is quite old, so you might consider upgrading. 
But now to you problem...

'loadimage' can't load jpeg images. Basically I think it just handles 
Octaves own image format (so it isn't that useful for most purposes).

The problem with imread is a known bug that has been fixed in more 
recent versions of octave-forge. The fix is however quite simple. Just 
open the 'imread' file (in your case, 
'/home/gher/sirjacob/Lib/octave/image/imread.m') in a text editor and 
replace all appearances (I think there is only one of 'IMAGE_PATH' with 
'IMAGEPATH' (just remove the underscore).

Hope that helps,
Søren

Damien SIRJACOBS skrev:
> Hello,
>
> I am discovering octave v2.1.64 (x86-64-suse-linux), just installed on the
> sun cluster computer of our university by the informatic team.
> As first simple check of its functionning, I have problems with opening of
> files, even with the octave included function loadimage:
>
> trying opening jpeg image with loadimage returns the following problem:
>
> octave:11> loadimage('Noamneige.jpg');
> error: load: /home/gher/sirjacob/Lib/octave/image/Noamneige.jpg:
> inconsistent number of columns near line 2
> error: load: unable to extract matrix size from file
> `/home/gher/sirjacob/Lib/octave/image/Noamneige.jpg'
> error: called from `loadimage' in file
> `/usr/share/octave/2.1.64/m/image/loadimage.m'
>
>
> trying opening jpeg image with the attached imread returns the following
> problem:
>
> octave:9> imread("Noamneige.jpg");
> error: `IMAGE_PATH' undefined near line 45 column 23
> error: evaluating argument list element number 1
> error: evaluating assignment expression near line 45, column 8
> error: called from `imread' in file
> `/home/gher/sirjacob/Lib/octave/image/imread.m'
>
> Could you please help me in finding the source of the problem?
>
> Thanking you in advance,
>
> Sincerely,
>
> Damien Sirjacobs
>
> Research Engineer - Project RECOLOUR-BELCOLOUR
> GeoHydrodynamics and Environmental Research  - GHER
> Department of Astrophysics, Geophysics and Oceanography
> Liège University
> Allée de la Physique, B5
> B-4000 Sart-Tilman (Liège)
> Belgium
> phone: +32 4 366.36.48
> fax: +32 4 366.23.55
> email: address@hidden
> http://modb.oce.ulg.ac.be/
>
>
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