Hello,
I'm using Marsbar to do data extraction for an nucleus accumbens ROI. I built the ROI in Marsbar, and when I extract my data from the ROI I am getting that "no valid data error". I've used the spm_hold function that the FAQ suggests(shown below) and am still getting the same error when I rerun my analyses. This fix, if I understand it, modifies the original ROI, rather than creating a new one, so I have been pulling the same ROI back into my analyses when I rerun them, assuming it has been modified with the correction. Has anyone else encountered this issue even after using this correction? Thanks in advance!
roi_filename = 'my_roi.mat';
my_roi = maroi(roi_filename);
my_roi = spm_hold(my_roi, 0); % set NN resampling
saveroi(my_roi, roi_filename);
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