I don' think the order matters much, but dividing by waytotal first will save you a step or 2.
Dear fsl experts,
I have performed probtrackx2 on my DTI data and now like to compare the obtained fdt_network_matrix across two groups using network-based statistics. To do this, the connectivity matrices must be symmetric about the diagonal. However, I realized that this is not the case for the fdt network matrices (see attached an example for the matrix file and seed file). Why is the number of streamlines from region i to j not the same as from j to i? Can I symmetrize the matrix somehow?
Thank you very much for your explanations and help
Best wishes
André