#6. If you don't yet know how to color by clusters found with algorithms, use your biological neural network (BNN) to cluster by eye:
#7. Your BNN may have been extremely powerful, but let's try some clustering algorithms. First is k-means clustering. Remember to take a peak at the result.
## Note: K-means is not necessarily deterministic, and the end-result depends on a few things, such as the initial starting points, the number of iterations, and the number of times you restart the algorithm to see if you can do better. Nonetheless, it usually does quite well. Just provide it the number of clusters, k, that you are expecting. If you don't know "k", then a whole other topic is on ways to select "k". Here we know we have 3 samples, so we should have 3 clusters.