Is there a simple way to reduce the axis label and bin text size on the correlation matrices created by the TMVA Gui? If I train a BDT with a large number of variables, when I plot the variable correlation matrices, the labels overlap on the x-axis, and the bin labels overlap adjacent bins.
I’ve tried writing my own script to produce the correlation matrices but in my TMVA.root file, the TH2F CorrelationMatrixB looks to be empty by default - I presume it is filled with correlation coefficients by a script separate to correlation.cxx, but I’m not sure which one. If you could point me to that, that would also help
Note that the canvas and the contained histogram has the same name CorrelationMatrixS and CorrelationMatrixB for classification and CorrelationMatrix for regression.
Using this it should be fairly straight forward to change what you want. Please let me know if you need some more help.