Aloha,

tksurfer is extremely picky about the underlaying opengl libraries, many do not work at all. People had dofferent degrees of success updating the graphic drivers on their computers to the most recent versions their hardware maker saupplies (if I recall correctlt especially with nvidia cards). One thing that worked for me was to force the use of redhat server 4 opengl libraries on a system that only runs with software opengl (mesa I presume), or alternatively use virtualbox (virtual boxes opengl drivers play nicely with tksurfer). Thanks to Pedro Paulo Oliveira you can even download a virtualbox image that should work right away (http://surfer.nmr.mgh.harvard.edu/pub/dist/freesurfer/4.5.0/VirtualBoxFS45-S... but see http://surfer.nmr.mgh.harvard.edu/pub/dist/freesurfer/4.5.0/VirtualBoxFS45-S... first ). The virtualbox image can be used from windows macosx and linux...

Good luck Sebastian

On Sep 30, 2009, at 6:16 AM, freesurfer-request@nmr.mgh.harvard.edu wrote:

Message: 2 Date: Wed, 30 Sep 2009 10:31:27 +0200 From: "Ahmed, F, Me fahmed@sun.ac.za" fahmed@sun.ac.za Subject: [Freesurfer] tksurfer To: Freesurfer Mailing List freesurfer@nmr.mgh.harvard.edu Message-ID: 5B91A2407B81E042A12EBA1B8CCFED4831A3182B01@TYGEVS02.tyg.sun.ac.za Content-Type: text/plain; charset="us-ascii"

Hello,

I'm trying to view and check the smoothing and inflation surfaces, the white and pial surfaces for "bert" using tksurfer as I'm trying to get used to using Freesurfer, but I'm a little confused to what I'm seeing. When I type in: "tksurfer bert lh inflated" for example, I only see a very small section at the very end of the image...is this correct? When I view the curv files, I do see a green pattern overlaid on the inflated surface, however it's still so small. When I view the pial and white surfaces, again, the section displayed is very small, I don't know if this is correct or if this is what I am supposed to be seeing? Also, when I type in: "tksurfer bert lh sphere", I see nothing at all.

If someone could shed some light on the matter I'd be extremely grateful.

Thank you