How to set elements in 2D matrix to zero given Index ?

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RuiQi on 12 Jun 2017
Answered: Walter Roberson on 12 Jun 2017
gt_regions = regionprops(gt,'PixelList');
linearInd = sub2ind(size(gt), gt_regions(1).PixelList(:,2), gt_regions(1).PixelList(:,1));
Now how do I use this to set the matrix elements to zero ?
ans = gt(linearInd) == 0; ?

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