Hi, I want use for an histogram a transparent color to fill the area. Reading the user manual seems that setting the fill style in the range 4000-4100 I will obtain this result but i obtain only a fully transparent fill style, why?
this is the code for the example:
TH1F *histo = new TH1F("histo","Histo",50,-4,4); histo->FillRandom("gaus",1e4); TCanvas *c1 = new TCanvas("c1","Canvas",1); c1->SetFillColor(kBlue); histo->SetFillStyle(4010); histo->SetFillColor(kGreen); histo->Draw("e bar");
I need to compile ROOT with a particular version of some graphich library?