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How to use
Pick a preset and press play (or drag time t): the second map shows the sand pile flowing from the source to the target along the transport map; the arrows on the first map are the map itself. The fourth map is the plain average of the two images, for comparison. Raise or lower epsilon and the iteration limit to see how the Sinkhorn solver trades sharpness against speed, run the epsilon sweep to extrapolate the true Wasserstein distance, and read the seven numerical checks below.