Finding Leaks with Colour and Bars

In preparation for a set of new “Leak Detector” screens in Poker Copilot, I’m reading Stephen Few‘s “Now You See It: Simple Visualization Techniques for Quantitative Analysis“. The subtitle is tedious, better would be “Make Awesome Charts.”

I’m getting a lot of value from Few’s book on using colour and simple charting techniques to make analysis easier. Here’s what I started with:

Screen shot 2009-11-28 at 12.05.26 PM.png

The info is there, but you have to read and compare all numbers carefully to spot the patterns.

Step 2: I added colour to show positive and negative numbers:

Screen shot 2009-11-28 at 12.05.38 PM.png

Now we can immediately see that I’ve been losing money with 44, and winning with all other pocket pairs. But some info is still hiding, requiring careful manual analysis.

Step 3: Show the magnitude with a coloured bar:

Screen shot 2009-11-28 at 12.05.45 PM.png

Ho ho! Now the patterns are clear. I’m doing something wrong with TT and 99, which should be good earners: my winnings are positive but only just. Aces, Kings, Queens, Jacks are all paying out well, so I’m happy with the way I play them.