Claire Gwenlan <cg@hep.ucl.ac.uk> writes: > Hi Everybody, > > Sorry about another simple question (my only excuse is that I've only just > started!). I want to plot a very simple set of histograms (in black and > white) all overlayed onto each other, so I basically want to choose lots > of different line styles eg. dashed, dotted etc. I've looked at all the > documentation and I thought that maybe SetHistLineStyle will > do the trick. > [...] > > h1->SetHistLineStyle(somenumber); > > if my histogram is h1. The error that comes up is the following: > > Error: Can't call TH1F::SetHistLineStyle() in current scope Hi, you can't use SetHistLineStyle with h1, as it is a method of TStyle. You can change the current line style by gStyle->SetHistLineStyle(number) I personally use h1->SetLineStyle(number) to achieve this. TH.. classes inherit from TAttStyle and this is one of its methods. A usefull feature of Root is the Tab completion. Type h1->Set and hit the tab key. You'll find immediately what's available. Jiri
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