Thanks. This works nicely .But If I want to save it in a postscript file by adding c1->Print("new.ps"); to the macro ,shaded region disappears,graph prints. Subhendu Chakrabarti On Tue, 6 Aug 2002, Rene Brun wrote: > Hi, > > Here is an example > > void fillg() { > const Int_t n = 8; > Double_t x[n] = {87,100,110,120,130,150,160,200}; > Double_t y[n] = {1e-6,2e-6,2.5e-6,3e-6,3e-2,2e-1,3e-1,7e-1}; > Double_t xmin = 80, ymin = 1e-6, xmax = 200, ymax = 1; > > TGraph *g = new TGraph(n,x,y); > > TCanvas *c1 = new TCanvas("c1"); > c1->SetLogy(); > c1->DrawFrame(xmin,ymin,xmax,ymax); > g->SetLineColor(2); > g->Draw("l"); > > //make a new graph using the previous graph points > //+ the corner points of the pad. > TGraph *gabove = new TGraph(n+3); > for (Int_t i=0;i<n;i++) gabove->SetPoint(i,x[i],y[i]); > gabove->SetPoint(n,xmax,ymax); > gabove->SetPoint(n+1,xmin,ymax); > gabove->SetPoint(n+2,xmin,ymin); > gabove->SetFillColor(4); > gabove->SetFillStyle(3012); > gabove->Draw("f"); > } > > > Rene Brun > > On Tue, 6 Aug 2002, Subhendu Chakrabarti wrote: > > > > > Hi > > I want to give a dark shade on the upper side of the graph > > only .(see attachment) > > > > Can anybody give some idea how to do that ? > > > > Thanks in advance . > > > > Subhendu Chakrabarti > > > > > > >
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