TH1::Scale()

ROOT
1

Hi,

In the root documentation for TH1::Scale() at:
root.cern.ch/root/html/TH1.html#TH1:Scale

it gives the declaration as:
void Scale(Double_t c1 = 1, Option_t* option = “”)

and says: If option contains “width” the bin contents and errors are divided
by the bin width.

However, in ROOT 5.18.00a:
/afs/cern.ch/sw/lcg/external/root/5.18.00a/slc4_ia32_gcc34/root

I see only:
void Scale(Double_t c1 = 1)

Was the second argument removed at some point? It would be very useful.

Thanks,
Eric

2

You are looking at the documentation of the current version. The “width” option was introduced only in version 5.20. see doc of 5.18 at
root.cern.ch/root/html518/TH1.html#TH1:Scale

Rene

3

I see, thanks for the clarification.

Eric