Hi,
TH1’s documentation says :
[quote]ROOT supports the following histogram types:
1-D histograms:
TH1C : histograms with one byte per channel. Maximum bin content = 255
TH1S : histograms with one short per channel. Maximum bin content = 65535
TH1I : histograms with one int per channel. Maximum bin content = 2147483647
TH1F : histograms with one float per channel. Maximum precision 7 digits
TH1D : histograms with one double per channel. Maximum precision 14 digits[/quote]
There is no word about TH1F and TH1D maximum bin content, which seems to be about 1.6777216e+07 entries. Maybe the documentation should include this specification ?