Dear PyMVPA experts, r=0, 1, 3 respectively correspond to 1, 9, 123 voxels in the following page:
http://dev.pymvpa.org/examples/searchlight.html However, doesn't r=1 encompass 1 center+6 faces=7 voxels? Also, is there a formula for calculating the number of voxels given a specific radius? Finally, suppose a voxel=3*3*3mm, is it correct that r=3 covers up a neighborhood of (left 3*3mm + center 1*3mm + right 3*3mm)=21mm spherically? Thanks! Dale
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