Those values are radians. Does that help?
doug

On 11/29/2012 06:09 PM, Zhou, Wei wrote:
> Hi Doug,
>
> Thank you for your patient. I wanted to see how the polar angle 
> correlates with the map and I expect a wheel bar which distinguish 
> different polar angles.
> I typed:
>
> rtview --s SUBJ1 --lh --polar   --real 
> SUBJ01/bold/rtopy.self.lh/polar/real.nii.gz --imag 
> SUBJ01/bold/rtopy.self.lh/polar/imag.nii.gz --fsig 
> SUBJ01/bold/rtopy.self.lh/polar/fsig.nii.gz
>
> I could see some blue, red and green region in the cortex. Then i 
> click "show the color scale bar" and I get a all-blue and vertical bar 
> ranging from -1.18 to -0.4 and 0.4 to 1.18. I do not know how to 
> interpret the image with this bar.
>
> I am asking if wheel bar is still supported in freesurfer5. If so, how 
> can I get it to interpret the maps?
>
> Thank you.
>
>