After a little work with +Ian McEwen, here's some improvements that were made to the +MusicBrainz statistics "Rate of Change" graph. Previously it was smoothing the data using a trivial "difference since one week ago" algorithm - and it was kind of confusing, because it was showing weekly data on a daily graph.

I've improved it so that it's now using an exponentially weighted moving average to smooth the data, and it shows real daily numbers as well.

Attached images are the before and after shots on one slightly troublesome graph.

(These changes aren't live, but you might see them in the next couple releases, or check out a preview: )
2012-01-22 (2 photos)
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