You don't need to use this, i don't know your life, but if this is something you're into then by all means.
Stocks rose sharply in trading today... 1,2,4,1,9,42,53,2,45,16,2,3,15,0 becomes 1,2,4,1,9,42,53,2,45,16,2,3,15,0 (the sparkline has a title attribute with the original data)
I did pretty well this week at the range: +++==-++-+++==-++++=+ becomes +++==-++-+++==-++++=+
The code that performs the transformations above is pretty straightforward, you can probably even implement it yourself in a smarter way. The code as it stands requires underscore.js, but you can probably rewrite it not even need that (it uses
_.uniq, _.map, _.max, _.min, _.range). it's your call