[caret-users] How to draw fiducial retinotopic lines on PLAS surface?

[Jay Hegdé]

Hi Donna/John,
   I've been using th SPM2 template in Caret5 to visualize human 
functional maps from SPM5 on the PALS atlas.

   My question is whether it is possible to delineate the fiducial 
retinotopic lines/contours (e.g., horizontal meridians or 10 deg 
eccentricity lines) of the retinotopic areas on the PALS atlas.  Various 
portions of the Caret5 User's Guide suggest that it should be possible 
to do this in Caret (e.g., "Topography contains polar angle and 
eccentricity mappings for each node in the surface." p.7, Caret5 User's 
Guide to Analysis Procedures, 22 Sept 2006).  But I can't seem to find 
any description of how to use them (or other applicable files) to 
demarcate these contours.

   Could you please help?

   Thank you very much,
   Jay Hegdé
   U Minnesota