That’s the thing that I did for so far: changing the nr of bins from 42 to 168 and filling only the first 42. But then he still plots the whole circle.
And if I type TH2F plot = new TH2F(“plot”,"",42,0.,3.14159/2., 18.,0.,18.), he devides the 2PI range of the polar phi-parameter into 42 sectors.
So xmin ->0 and xmax->2PI.
Entries are filled relatively…
Jan