Hi,
I did ask this question a few times, but I don't seem to get
profile-plots to work properly.
My question is:
How can I generate a profile plot where I determine the binning
and range and not ROOT?
I use the following commands: (the x-range of the histogram is
from -200 to 200 and I would like to have a profile plot from
-100 to 100)
root [1] h1p = new TProfile("h1p","test",100,-100,100,0,1);
root [2] ntuple->Draw("pol:npos>>h1p","","prof");
Warning in <TNtuple::Draw>: Deleting old histogram with different dimensions
THIS WARNING TELLS ME THAT MY DEFINITION OF "h1p" IS OVERWRITTEN !!!
The displayed plot ranges from -200 to 200 in x.
and the command
root [3] h1p->Draw();
shows also a range from -200 to 200.
I am sure I do something wrong, but I'd like to know what?
Can somebody help me?
Wolfgang
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