Hello AFNI community -

I've created a bunch of binary-coded masks where the different ROIs in the masks have values that are powers of 2 (1,2,4,8, ...) Then I've combined all these masks by adding them together. The result is a meta-mask, in which every active voxel can be decomposed into its contributions from the individual masks. (I think I got this idea originally from an AFNI document but I can't find it now.)

Anyway, in examining these results in the AFNI gui I'd like to filter the active voxels based on specific numbers, as in: "Show me all the voxels with value 15" vs. the usual "Show me all the voxels with value >= 15" that you can obtain with the threshold slider.

I know I can extract any specific voxel and save it to a dataset with 3dcalc; but is there a way to do this interactively, so I can look at some particular combination of mask values? I've googled and read docs but I can't find anything.