We are very pleased to announce that the new AFNI Message Board framework is up! Please join us at:
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The current Message Board discussion threads have been migrated to the new framework. The current Message Board will remain visible, but read-only, for a little while.
It might be more straightforward to do this with 3dClusterize, say, which outputs the cluster extents. You could just take the most posterior extent form the list of clusters (min size = 1 voxel, if possible).