I used probtrackx2 to perform tractography from the subthalamic nucleus to 6 cortical areas with the omatrix1 option and a waypoint through the thalamus (thalamus as a whole mask - wyapoint 'AND'). Result: I am not able
to perform clustering
with Kmeans anymore following the instructions reported at https://fsl.fmrib.ox.ac.uk/fsl/fslwiki/FDT/UserGuide
Warning: Ignoring rows of X with missing data.
> In kmeans (line 164)
Error using kmeans (line 269)
X must have more rows than the number of clusters.
The number of targetmasks is set to 6 so I have 6 clusters for Kmeans. The curious thing is that without waypoint it was working fine...
thanks a lot