Monthly Archives: May 2014

first bl.ock!

I thought it might be helpful to have a little tool to test out various d3 format specifiers.  So, I built this little bl.ock example. Comments on the tool and code are welcome! Advertisements

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Changing the y-axis or the aspect ratio can make line charts look really different

A friend recently shared this graph from KPCB, asking about the effect of not including 0 on the y-axis. I took the same data, at least as closely as I could estimate it from the graph, and redrew it. First, … Continue reading

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closest pair algorithm

Learned about the “closest pair algorithm” today in the Coursera/Stanford Algorithms course.  Really liked the key sparsity argument which follows so cleanly from the fact that: we’re only interested in split pairs of points that are closer together than delta, … Continue reading

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May 13th, 2014

Got 5/5 on my first homework for my Algorithms course.  Now, learning Python in order to complete the first programming exercise. Enjoying the diveintopython3.net tutorial.  Gets you into ‘real’ code quickly, instead of spending several pages learning how to do … Continue reading

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Trouble, cunning, and a fighting spirit — the key to visualizing data

Today’s quote from the past: “The user is not showered with graphical displays. He can get them only with trouble, cunning, and a fighting spirit. It’s time that was changed.” This is the last sentence of Anscombe’s 1973 paper which … Continue reading

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weather data

I’m a sucker for weather data, and weatherspark.com is one of my favorite websites. The good: 8760 points of data in one simple chart San Francisco (left) and Boston (right) –“frigid is purple (below 15°F), freezing is blue (15°F to … Continue reading

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