In a macro I open ROOT file containing a TTree of TOjects, and then I plot some histograms for about 20k events. One of my branch objects contains a pointer to a TClonesArray and when I add code to iterate through the array I find that the processing time increases from seconds to minuets. I created the TBranches with split=1 which (I believe) will create sub branches. Is there a way to speed up the macro by setting some branch address to the TClonesArray?
Thanks for any pointers...
-- Paul M. Eugenio Dept. of Physics Carnegie Mellon University (412) 268 6949 eugenio@ernest.phys.cmu.edu