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Hi Andy
The zigzag comes because the lines have to connect vertices on the surface. How big is your rectangle? If it is pretty big I would think the zigzags would be relatively small (although still high-frequency since the vertices are about 1mm
apart). I don’t think we have anything that will do exactly what you want, but coding something up to find every vertex inside a rectangle should be pretty easy in matlab or python
Cheers
Bruce
From: freesurfer-bounces@nmr.mgh.harvard.edu <freesurfer-bounces@nmr.mgh.harvard.edu>
On Behalf Of Andy Kim
Sent: Friday, July 14, 2023 8:44 AM
To: freesurfer@nmr.mgh.harvard.edu
Subject: [Freesurfer] Can I use Freeview (tksurferfv) Tools on surface?
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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