Finished slow version of getting thresholding groups. Randomization is too slow. Moving to k-means approach now.
Merge branch 'master' of https://github.com/JimHokanson/matlab_NEURON
Merge branch 'master' of https://github.com/JimHokanson/matlab_NEURON
Updates to getGroups before I make the new version with the maximum distance code.