> Hi ROOTers,
>
> I want to draw a pave and a graph in the same pad. But the pave should be on
> top of the graph.
>
> Here is my test macro:
>
> {
> gROOT->Reset();
>
> c1 = new TCanvas("c1","canvas",10,0,350,470);
> pad = new TPad("pad", "pad", 0.1, 0.1, 0.9, 0.9);
> pad->Draw();
> pad->cd();
>
> float x[] = {0., 1.5, 2.};
> float y[] = {0., 0.8, 2.};
> graph = new TGraph(3,x,y);
>
> pave = new TPaveText(0.5, 0.8, 1.0, 1.0);
> pave->AddText("This is a pave");
>
> pave->Draw();
> graph->Draw("AL");
>
> }
>
> But now the graph is on top of the pave and you can see only part of the pave.
>
> If I call first
> graph->Draw("AL");
> and than
> pave->Draw();
> the pave is on top of the graph. But the coordinates defined in the pave
> constructor now are interpreted in the range of the frame of the already drawn
> graph. I'm not able to place the pave at the top right corner of the pad
> because I'm not allowed to define coordinates > 1.0 in the pave constructor.
> Anyhow I think it is a bad idea to define the pave coordinates in the range of
> the graph because the graph coordinated may be unknown while the pave is
> created.
>
> Is there a function to put the pave on top of the graph after both are drawn?
>
> Cheers Reiner.
All TPave based classes support an option in the constructor to create
the object in the Normalized Device Coordinate (NDC) system (the one
of the pad [0,1]).
I have modified your macro below to do what you want.
Rene Brun
{
gROOT->Reset();
c1 = new TCanvas("c1","canvas",10,0,350,470);
pad = new TPad("pad", "pad", 0.1, 0.1, 0.9, 0.9);
pad->Draw();
pad->cd();
float x[] = {0., 1.5, 2.};
float y[] = {0., 0.8, 2.};
graph = new TGraph(3,x,y);
pave = new TPaveText(0.5, 0.8, 1.0, 1.0,"brNDC");
pave->AddText("This is a pave");
graph->Draw("AL");
pave->Draw();
}