Sparklines, as defined by Tufte, are intense, simple, word-sized graphics. I found them fascinating and useful and needed a way to generate them. At first I published some simple Python scripts to produce Sparklines, but since then I have added this page for interactively designing them, a web service you can use to add them to your own site, and finally the source code to the web service.
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So far, we don't have a record of any changes to this API