Dear Ruopeng,

I have a question about reading the whole brain fiber. As we known,  a track file(for example dit.trk) is created after  the command 'dti  tracker' execution. But when I read the track file in Matlab, the  n_count (Number of track stored in  this track file)in the header is  0. I don't know? The track file size is about 21.8M.But after execute the  command 'spline filter',the n_count of the newe track file is nonzero.Why? In the file format file, you mentioned that the n_count 0 means the number was Not Stored. What is mean?If I want to read the track file created by the 'dti tracker',what shall I do?
Best regrads,
Ping