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Friday, June 02, 2017

Batted-ball data visualization using an alternative to a heatmap – fivetwentyone

This is some cool work. (Yes, data analysis can be cool.)

Data visualization research suggests that spatial separation and length are the most effective ways of showing quantitative comparisons, and in particular that color is better for categorical variables than quantitative variables. My goal here is to explore an alternative to a heatmap that uses a line graph instead of color to show the quantitative dependance of batting average on launch speed. One complication with that is that the way the batting average changes with launch angle depends on launch speed which gives the data interesting spatial behavior in the launch-angle / launch-speed plane. To try and keep this information, I came up with the idea of using brushing on the launch angle variable to highlight a given value of launch angle but to also highlight the neighboring few values to try and show the gradient in the launch angle direction. The result looks like this,

Jim Furtado Posted: June 02, 2017 at 06:39 AM | 0 comment(s) Login to Bookmark
  Tags: sabermetrics

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