Tckedit for mean .tck of all subjects

Hello y’all!

I have concatenated all .tck of my subjects to get the overall tractography (after all the processing and such). Is there any possibility to get some form of mean .tck for all the subjects, like a randomly picked -number N (instead of getting the first N streamlines of the total .tck, get a random number of streamlines, making it representative of the whole population).