ROOT_528-00b_version: tutorials/hist/hlabels2.C Source File

00001 // 2-D histograms with alphanumeric labels
00002 // author; Rene Brun
00003 void hlabels2()
00004 {
00005    const Int_t nx = 12;
00006    const Int_t ny = 20;
00007    char *month[nx]  = {"January","February","March","April","May",
00008       "June","July","August","September","October","November",
00009       "December"};
00010    char *people[ny] = {"Jean","Pierre","Marie","Odile","Sebastien",
00011       "Fons","Rene","Nicolas","Xavier","Greg","Bjarne","Anton",
00012       "Otto","Eddy","Peter","Pasha","Philippe","Suzanne","Jeff",
00013       "Valery"};
00014    TCanvas *c1 = new TCanvas("c1","demo bin labels",10,10,800,800);
00015    c1->SetGrid();
00016    c1->SetLeftMargin(0.15);
00017    c1->SetBottomMargin(0.15);
00018    TH2F *h = new TH2F("h","test",3,0,3,2,0,2);
00019    h->SetBit(TH1::kCanRebin);
00020    h->SetStats(0);
00021    gRandom->SetSeed();
00022    for (Int_t i=0;i<15000;i++) {
00023       Int_t rx = gRandom->Rndm()*nx;
00024       Int_t ry = gRandom->Rndm()*ny;
00025       h->Fill(people[ry],month[rx],1);
00026    }
00027    h->LabelsDeflate("X");
00028    h->LabelsDeflate("Y");
00029    h->LabelsOption("v");
00030    h->Draw("text");
00031    
00032    TPaveText *pt = new TPaveText(0.6,0.85,0.98,0.98,"brNDC");
00033    pt->SetFillColor(18);
00034    pt->SetTextAlign(12);
00035    pt->AddText("Use the axis Context Menu LabelsOption");
00036    pt->AddText(" \"a\"   to sort by alphabetic order");
00037    pt->AddText(" \">\"   to sort by decreasing values");
00038    pt->AddText(" \"<\"   to sort by increasing values");
00039    pt->Draw();
00040 }