→ Click to place a point. → Place them in clusters (as seen on the thumbnail) for the best effect. → Press done, and your points will be mapped from a two dimensional space to a one dimensional space with as little information lost as possible.
Alternate version: https://scratch.mit.edu/projects/460571204/ This version works instantly, but isn’t quite as accurate as the other one. It uses principal component analysis. Unfortunately, the code only works for a two to one dimensional transformation. It isn’t generalised to all dimensions.