Hello, I use TH1F histograms with huge number of bins (>30000) and I have some problems/remarks: - Is there any way to set the range in axis value instead of bins value ( like H/PL 100(58.3:60.2) in PAW, I had to create a function to do it with ROOT)? - When I use TAxis::SetRange with bins numbers above 100000, it failed . Finally when using a TTree with huge number of entries, the Draw function seems to consider only the first 10000 entries: Example: TTree* h1 contains 990000 entries with 2 branches one with the time T (every 2 ms) of measuremnt the other with the current I: h1->Draw("T","T>20","E",100000) draws the time between 20 and 40 s only If I book a TH1F with the good range (0,2000 s) it is filled properly. Best Regards laurent -- Laurent Mirabito IPN Lyon
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