Hi, Giuseppe-
How about taking the log10(...) of the dataset before 3dBrickStat:
3dcalc -a DSET -expr 'log10(a)' -prefix DSET_LOG10
3dBrickStat -perclist 1 100 -perc_quiet DSET_LOG10
? That will just transform your range from [1.2326e-32, 5.58214e-07] -> [-31.90917784, -6.25319928], but it should be a one-to-one mapping, hence fine? And exponentiation with 10**(...) will undo that?
When so many orders of magnitudes are being spanned with values, it seems nice to use logarithms, anyways.
--pt