Tcksift2 streamline order

[JusGarber]

Hi there,

I understand that in the new 3.0.0 version the tractography commands preserve the order of streamlines in their outputs even with multithreading enabled (as per the changelog below)

@rsmith

Tractography commands: Commands that take as primary input streamlines data ( tckedit , tckresample , tcksample , tcktransform ) will preserve the order of their outputs relative to the input streamlines even if running multi-threaded.

Does this include the output of tcksift2? I am developing a pipeline that uses tckedit, tcksample and tcksift2, and I need the streamline order from each command to match up. Can I use tcksift2 with multi-threading as well, or should I use single threading for this.

Thanks very much
Justin

[jdtournier]

tcksift2 doesn’t produce a new streamlines file, it produces a file of per-streamline weights – the order of which has to match the original input streamlines file anyway. So yes, it’s perfectly safe (and highly encouraged) to use multi-threading with that too.

[JusGarber]

Thanks very much!