Hi Nick - Thanks for the reply.
An update: for the time being I just went back to not using remove_invariant_features and ignoring those warning messages. However, processing one of my subject's data (so far only just one hangs, out of 7 that finish) hangs PyMVPA s.t. it never resolves. My understanding is that these warnings I'm getting: WARNING: Obtained degenerate data with zero norm for training of <LinearCSVMC>. Scaling of C cannot be done. * Please note: warnings are printed only once, but underlying problem might occur many times * and the underlying issue (of some dead voxels being included in the dataset) should not actually crash the system -- presumably searchlights centered at voxels that include these dead voxels might be weird, but not more than that . If that assumption is right, and I can give you something to help determine what's gone awry, let me know. S
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