hello, In encounter rthe follwoing problems with error bars on TH1F: 1/I put some errors to one histo in my analysis. Now I can't get rid of them when plotting it! h1->Draw("P") still draws the error bars...Is there a way of drawing only the points values? 2/I have a ntuple with "x y sigma_y". Is there a direct way to plot y vs x with sigma_y errors on y (other than MakeClass...)? 3/I plot some histos on my canvas. I then want to add some points from a tuple. when I incoporate "tuple->Draw("y:x","",""same"); to my script I don't see any oupput (even with a c1->Update) if I do it interactively it works... (I am using Root3.05) thanks stephane
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