Hello Histogram!

I used the 3D DTW algorithm on the double-integrated path data. Above is the histogram result. Hello separation! Task 1 and task 2 separate their scores by about 40,000. Task 1 and 3 over lap some, but overall the tight grouping for task 1 to task 1 comparisons and the good separation mean that this method should give very good similarity scores.

Edit: the MATLAB code to play around with this is here