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Hi Ben, to normalise yor fdt_network_matrix, you can divide each row by the respective entry in the waytotal file. Hope this helps, cheers, Matteo > On 20 Feb 2018, at 17:10, Ben Chernoff <[log in to unmask]> wrote: > > Hello FSL Experts, > > I've generated a connectivity matrix of 78x78 using the fdt_network_matrix output from probtrackx2. Because my ROIs are unequal size, I want to normalize the results by dividing by the waytotal. However, the waytotal file is 78x1, not 78x78. I'm unsure if I should divide along columns or along rows. In other words, for the first number in the waytotal file, do I want to divide every number in row 1 of fdt_network_matrix by that value, or do I want to divide every number in column 1 of fdt_network_matrix by that value? The matrix is not symmetrical about the diagonal so these would produce different results. > > Thank you! > > -Ben