[Marsbar-users] creating ROI from single voxel

[Urner, M. <mar...@uc...>]

I have a quick question concerning the definition of an ROI using a single voxel (in mm in MRI coordinates).
I.e. I tried to use the GUI via the following path
ROI definition -> Build ROI -> Voxel -> coordinate(s) (give coordinates of one voxel) -> coordinate(s) in (choose mm) -> Space for voxel ROI (Base Space for ROIs)

However, I get the following error message:

??? Error using ==> maroi_pointlist.maroi_pointlist at 61
Non integer points in voxel space - are points really of type 'mm'?

Error in ==> mars_build_roi at 70
  o = maroi_pointlist(struct('XYZ', XYZ, 'mat', sp.mat), v);

Error in ==> marsbar at 485
o = mars_build_roi;

Error in ==> spm at 968
evalin('base',CBs{v-1})

??? Error while evaluating uicontrol Callback


Thanks for your help,
Maren