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Hi Matteo, Sorry for my intrusion. How would you do to correct the matrix for the distance? and another question is that you always have to normalize the matrix in this way whenever your voxels have or not an equal size, right? Best regards, Rosalia 2018-02-27 0:00 GMT+01:00 Matteo Bastiani <[log in to unmask]>: > 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 >