Hi,
It seems that there is a little bug in ROOT version 5.34.00 (comparing to 5.32), when you want to use “#tilde” in any name. The result is that in the corresponding .png the tilde is shifted upward.
Try for instance in the following code :
{
TNtuple* nt = new TNtuple("nt","","a:b:c");
TCanvas *Can = new TCanvas("Can","Can",200,10,600,400);
Double_t x[16] = {1.00, 2.00, 6.00, 7.00, 3.00, 10.00, 0.20, 5.55,
20.50, 9.75, 1.50, 8.00, 5.00, 0.95, 3.85, 8.70};
Double_t y[16] = {1.00, 2.00, 6.00, 7.00, 3.00, 10.00, 0.20, 5.55,
20.50, 9.75, 1.50, 8.00, 5.00, 0.95, 3.85, 8.70};
Double_t z[16] = {0.001, 2.50, 600.00, 0.00001, 30.00, 10.001, 300000.0, 500000.55,
20.50, 9.75, 280000.50, 8.00, 5.00, 0.95, 3.85, 8.70};
Double_t x3, y3, z3;
for(Int_t h1 =0;h1<16;++h1)
{
x3 = x[h1];
y3 = y[h1];
z3 = z[h1]; nt->Fill(x3,y3,z3);
}
Can->SetTickx(1);
gStyle->SetOptStat(0);
gStyle->SetPalette(1,0);
nt->SetMarkerStyle(20);
nt->SetMarkerSize(1);
#if 0 /* 0 or 1 */
Double_t xmin = 0.01, xmax = 50, ymin = 0.01, ymax = 50;
#else /* 0 or 1 */
nt->SetEstimate(nt->GetEntries() + 1);
Double_t xmin = nt->GetMinimum("a"); // "a" is X in the nt->Draw below
Double_t xmax = nt->GetMaximum("a");
Double_t ymin = nt->GetMinimum("b"); // "b" is Y in the nt->Draw below
Double_t ymax = nt->GetMaximum("b");
#endif /* 0 or 1 */
// http://root.cern.ch/root/html/TTree.html#TTree:Draw@2
#if 0 /* 0 or 1 */
TH2F *h = new TH2F("h", "h", 100, xmin, xmax, 100, ymin, ymax);
nt->Draw("b:a:c>>h", "", "colz"); // warning: TTree::Draw destroys "h"
// gPad->Modified(); gPad->Update();
h->GetXaxis()->SetLimits(xmin, xmax); // restore proper "h" X axis limits
h->GetYaxis()->SetLimits(ymin, ymax); // restore proper "h" Y axis limits
#else /* 0 or 1 */
nt->Draw("b:a:c", "", "colz"); // note: TTree::Draw creates a "htemp"
// gPad->Modified(); gPad->Update();
// TH2F *htemp = ((TH2F *)(gPad->GetPrimitive("htemp")));
htemp->GetXaxis()->SetLimits(xmin, xmax); // set proper "htemp" X axis limits
htemp->GetYaxis()->SetLimits(ymin, ymax); // set proper "htemp" Y axis limits
#endif /* 0 or 1 */
gPad->SetLogx(1);
gPad->SetLogy(1);
// gPad->Modified(); gPad->Update();
TLatex *t1 = new TLatex(10.,1.,"#tilde{test}");
t1->SetTextSize(0.05);t1->Draw();
}