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Dear FreeSurfer Developers,

Hi. I want to manually draw a rectangular ROI on flat map. I tried "PolyLine voxel draw" of ROI edit tool (MailScanner has detected a possible fraud attempt from "secure-web.cisco.com" claiming to be https://surfer.nmr.mgh.harvard.edu/fswiki/FreeviewGuide/FreeviewTools/RoiEdit).

On the other hand, unfortunately, it seems that it only works in 3d volume space.

So, I tried "Path/Custom FIll" -> pointing 4 vertices of a rectangle -> "Make Closed Path". But this time, the vertices were not connected straight. The lines were zigzag.

Could you tell me how to draw a rectangular ROI with straight lines. Furthermore, if possible, could you explain how zigzag lines form?

Thank you in advance.

Kind Regards,

Andy (Junghyun) Kim