https://github.com/root-project/root
Tip revision: ad33180aab1bf0378b1fd5107177a0cbef8da70f authored by Unknown Author on 06 August 2003, 14:17:19 UTC
This commit was manufactured by cvs2svn to create tag 'v3-05-07a'.
This commit was manufactured by cvs2svn to create tag 'v3-05-07a'.
Tip revision: ad33180
ntuple1.C
{
//
// To see the output of this macro, click begin_html <a href="gif/ntuple1.gif">here</a> end_html
//
gROOT->Reset();
c1 = new TCanvas("c1","The Ntuple canvas",200,10,700,780);
gBenchmark->Start("ntuple1");
//
// Connect ROOT histogram/ntuple demonstration file
// generated by example hsimple.C.
f1 = new TFile("hsimple.root");
//
// Inside this canvas, we create 4 pads
//
pad1 = new TPad("pad1","This is pad1",0.02,0.52,0.48,0.98,21);
pad2 = new TPad("pad2","This is pad2",0.52,0.52,0.98,0.98,21);
pad3 = new TPad("pad3","This is pad3",0.02,0.02,0.48,0.48,21);
pad4 = new TPad("pad4","This is pad4",0.52,0.02,0.98,0.48,1);
pad1->Draw();
pad2->Draw();
pad3->Draw();
pad4->Draw();
//
// Change default style for the statistics box
gStyle->SetStatW(0.30);
gStyle->SetStatH(0.20);
gStyle->SetStatColor(42);
//
// Display a function of one ntuple column imposing a condition
// on another column.
pad1->cd();
pad1->SetGrid();
pad1->SetLogy();
pad1->GetFrame()->SetFillColor(15);
ntuple->SetLineColor(1);
ntuple->SetFillStyle(1001);
ntuple->SetFillColor(45);
ntuple->Draw("3*px+2","px**2+py**2>1");
ntuple->SetFillColor(38);
ntuple->Draw("2*px+2","pz>2","same");
ntuple->SetFillColor(5);
ntuple->Draw("1.3*px+2","(px^2+py^2>4) && py>0","same");
c1->Update();
//
// Display the profile of two columns
// The profile histogram produced is saved in the current directory with
// the name hprofs
pad2->cd();
pad2->SetGrid();
pad2->GetFrame()->SetFillColor(32);
ntuple->Draw("pz:px>>hprofs","","goffprofs");
hprofs->SetMarkerColor(5);
hprofs->SetMarkerSize(0.7);
hprofs->SetMarkerStyle(21);
hprofs->Fit("pol2");
// Get pointer to fitted function and modify its attributes
TF1 *fpol2 = hprofs->GetFunction("pol2");
fpol2->SetLineWidth(4);
fpol2->SetLineColor(2);
c1->Update();
//
// Display a scatter plot of two columns with a selection.
// Superimpose the result of another cut with a different marker color
pad3->cd();
pad3->GetFrame()->SetFillColor(38);
pad3->GetFrame()->SetBorderSize(8);
ntuple->SetMarkerColor(1);
ntuple->Draw("py:px","pz>1");
ntuple->SetMarkerColor(2);
ntuple->Draw("py:px","pz<1","same");
c1->Update();
//
// Display a 3-D scatter plot of 3 columns. Superimpose a different selection.
pad4->cd();
ntuple->Draw("pz:py:px","(pz<10 && pz>6)+(pz<4 && pz>3)");
ntuple->SetMarkerColor(4);
ntuple->Draw("pz:py:px","pz<6 && pz>4","same");
ntuple->SetMarkerColor(5);
ntuple->Draw("pz:py:px","pz<4 && pz>3","same");
l4 = new TPaveText(-0.9,0.5,0.9,0.95);
l4->SetFillColor(42);
l4->SetTextAlign(12);
l4->AddText("You can interactively rotate this view in 2 ways:");
l4->AddText(" - With the RotateCube in clicking in this pad");
l4->AddText(" - Selecting View with x3d in the View menu");
l4->Draw();
//
c1->cd();
c1->Update();
gStyle->SetStatColor(19);
gBenchmark->Show("ntuple1");
}