I wanted to make sure that the flag for tck2connectome (example),
-edge_statistic mean(current mrtrix3 version)
-metric meanlength(past mrtrix versions)
are the same (that ‘mean’ refers to mean streamline length/edge and not the mean no of streamlines/edge).
If the answer to ‘1’ is ‘yes’, following SIFT2, is tck2connectome using the streamline weights via -tck_weights_in flag in the calculation of
-edge_statistic mean? This is relevant if one wants to use the edge mean lengths to estimate conduction delay times. SInce SIFT2 weighs an assumedly /partially erroneous .tck input, any statistic involving this less-than-perfect input (which presumably propagates to the tck2connectome input) should also be weighed, isn’t it?
What I mean is that for a SIFT output
-edge_statistic mean could be (streamline 1 length+ streamline 2 length)/2
whereas for a SIFT2 output
-edge_statistic mean could be (streamline 1 length * weight 1+ streamline 2 length * weight 2)/2 ~
Is this the case?