My Photo

« Free of Understanding | Main | Brits Abroad »

February 17, 2008

Comments

Moritz Stefaner

Hi, interesting analysis. And what a great tip with the BlogPulse image map!

One thing though: I was a bit puzzled for a second why the second graph is _almost_ symmetrical, and then realized that it nicely demonstrates an old trap: Plotting ratios on a linear scale underrepresents ratios < 1! If, e.g. Obama=2*Clinton for a given time point, you get values of 2 and 0.5. Now clearly, 2 is much further from the "baseline" 1 than the .5, which results in a flattened impression on the smaller values. So as a tip for improvement, I would propose a logarithmic scale - or just plotting one of the two lines since they express the same thing anyways?

So, feel tuftified :)

The comments to this entry are closed.

Twitter Updates

    follow me on Twitter

    March 2016

    Sun Mon Tue Wed Thu Fri Sat
        1 2 3 4 5
    6 7 8 9 10 11 12
    13 14 15 16 17 18 19
    20 21 22 23 24 25 26
    27 28 29 30 31    

    Categories

    Blog powered by Typepad