I suspect that you're not using a z_stat map which has been transformed
into highres space - by default, you have only calculated the necessary
transformation matrices. You can check this using avwsize on highres
and on the stats image - voxel numbers and dimensions need to match for
it to work in the current version of fslview.
If you need to apply the transformation to the stats images you can try
the command line program featregappply or do it by hand, i.e. when you
want to see the overlay on the highres:
flirt -in thresh_zstatX -ref highres -out HR_zstatX -applyxfm -init
(the usual health warning apply when resampling statistics images!)
HR_zstatX should then work as an overlay for a highres underlay.
hope this helps
On 24 Jun 2004, at 21:33, Julius Fridriksson wrote:
> Greetings -- As my question probably reflects I am new to FSL (just
> completed the FSL course in Wurzburg). I am having difficulty viewing
> my functional maps overlayed on the structural image or in standard
> space using FSL View. My EPI was registerd to high res to standard
> space using FLIRT within FEAT. When I select to "add" the functional
> overlay on the registered high res image I get an error message "Cannot
> load incompatible overlay." Any suggestions what I am doing wrong?
> Thanks -- Julius Fridriksson
> Julius Fridriksson Ph.D.
> Assistant Professor
> Dept. of Communication Sciences & Disorders
> University of South Carolina
> Tel: (803) 777-5931
> Fax: (803) 777-3081
Christian F. Beckmann
Oxford University Centre for Functional
Magnetic Resonance Imaging of the Brain,
John Radcliffe Hospital, Headington, Oxford OX3 9DU, UK
Email: [log in to unmask] - http://www.fmrib.ox.ac.uk/~beckmann/
Phone: +44(0)1865 222782 Fax: +44(0)1865 222717