rootpy/rootpy — pull request #613 by ndawe (2014-07-30 08:05:27+00:00)
Title: plot_corrcoef_matrix improvements

Draw correlation matrices like this one:

![correlations](https://cloud.githubusercontent.com/assets/202816/3746502/3435232e-17c0-11e4-995b-82352150a3a7.png)