Re: imagesc

[Joe Koski]

on 11/24/06 2:57 AM, Eric Gayer at address@hidden wrote:

> > Please tell us which version of octave, octave-forge and gnuplot you are
> > using. 
>
> I intsalled octave 2.9.9, and gnuplot 4. (I don't know how to upgrade to the 4.1 version in an easy way)
>
> > The older Mac versions of octave/octave-forge write a .bmp file to
> > display images via the Mac Preview.app. 
>
> Where is it supposed to be write ? in the current directory or somwhere else ?
It once wrote into a /tmp file with a gibberish name, which would show up on your desktop in Preview.app, where you could save it with a name and location of your choice. That assumes that the 2.9.9 version still does what the 2.1.x versions did for Macs. That particular feature may have been dropped from octave-2.9.9 because of massive changes to the octave/gnuplot interface currently in progress for the introduction of gnuplot-4.2. This is a transition time for the octave graphics routines, and you may be caught in the gap.

> > Some newer (experimental) versions
> > use the gnuplot pm3d option to write such images directly to AquaTerm.
>
> that's what I am looking for actually, in order to export .pdf file...
There is a beta version called gnuplot-4.2.rc1 out there that works well with AquaTerm. Currently, it must be built from source on the Mac, after upgrading the Mac’s ancient Automake tool. Contact me off-list if you want to attempt that. It’s time consuming, but not too difficult.

Joe
> thank for your help
> > Hi,
> >
> > I just installed octave on OSX with Gnuplot and AquaTerm, everything
> > runs fine... I can see a simple plot or even the sombrero on
> > aquaterm. However I need to plot a matrixe A as we could do in matlab
> > using imagesc(A)...
> > But when I do it on octave, nothing happens... I don't see any figure
> > appearing, I don't see any new window and I don't get any error
> > message from octave...
> >
> > Is it possible to plot a matrice on Octave ?
> >
> > thank for your help
Eric