doc/v606/logscales_8C.html

void logscales() {

   TCanvas *c1 = new TCanvas("c1", "Various options on LOG scales plots",0,0,700,900);

   c1->SetFillColor(30);


   TPad *pad1 = new TPad("pad1","pad1",0.03,0.62,0.50,0.92,32);

   TPad *pad2 = new TPad("pad2","pad2",0.51,0.62,0.98,0.92,33);

   TPad *pad3 = new TPad("pad3","pad3",0.03,0.02,0.97,0.535,38);

   pad1->Draw(); pad2->Draw(); pad3->Draw();


   TPaveLabel *title = new TPaveLabel(0.1,0.94,0.9,0.98, "Various options on LOG scales plots");

   title->SetFillColor(16);

   title->SetTextFont(42);

   title->Draw();


   TPaveText *pave = new TPaveText(0.1,0.55,0.9,0.61);

   pave->SetFillColor(42);

   pave->SetTextAlign(12);

   pave->SetTextFont(42);

   pave->AddText("When more Log labels are requested, the overlapping labels are removed");

   pave->Draw();


   pad1->cd();

   pad1->SetLogy();

   pad1->SetGridy();

   TF1 *f1 = new TF1("f1","x*sin(x)*exp(-0.1*x)+15",-10.,10.);

   TF1 *f2 = new TF1("f2","(sin(x)+cos(x))**5+15",-10.,10.);

   TF1 *f3 = new TF1("f3","(sin(x)/(x)-x*cos(x))+15",-10.,10.);

   f1->SetLineWidth(1); f1->SetLineColor(2);

   f2->SetLineWidth(1); f2->SetLineColor(3);

   f3->SetLineWidth(1); f3->SetLineColor(4);

   f1->Draw();

   f2->Draw("same");

   f3->Draw("same");

   f1->GetYaxis()->SetMoreLogLabels();

   TPaveText *pave1 = new TPaveText(-6,2,6,6);

   pave1->SetFillColor(42);

   pave1->SetTextAlign(12);

   pave1->SetTextFont(42);

   pave1->AddText("Log scale along Y axis.");

   pave1->AddText("More Log labels requested.");

   pave1->Draw();


   pad2->cd();

   double x[10] = { 200, 300, 400, 500, 600, 650, 700, 710, 900,1000 };

   double y[10] = { 200, 1000, 900, 400, 500, 250, 800, 150, 201, 220 };

   TGraph *g_2 = new TGraph(10,x,y);

   g_2->Draw("AL*");

   g_2->SetMarkerColor(2);

   g_2->GetYaxis()->SetMoreLogLabels();

   g_2->GetYaxis()->SetNoExponent();

   pad2->SetLogy();

   g_2->GetXaxis()->SetMoreLogLabels();

   pad2->SetLogx();

   pad2->SetGridx();

   TPaveText *pave2 = new TPaveText(150,80,500,180);

   pave2->SetFillColor(42);

   pave2->SetTextFont(42);

   pave2->SetTextAlign(12);

   pave2->AddText("Log scale along X and Y axis.");

   pave2->AddText("More Log labels on both.");

   pave2->AddText("No exponent along Y axis.");

   pave2->Draw();


   pad3->cd();

   pad3->SetGridx();

   pad3->SetGridy();

   pad3->SetLogy();

   pad3->SetLogx();

   TF1 *f4 = new TF1("f4a","x*sin(x+10)+25",1,21);

   f4->SetLineWidth(1);

   f4->Draw();

   f4->SetNpx(200);

   f4->GetYaxis()->SetMoreLogLabels();

   f4->GetXaxis()->SetMoreLogLabels();

   f4 = new TF1("f4b","x*cos(x+10)*sin(x+10)+25",1,21);

   f4->SetLineWidth(1); f4->Draw("same");

   f4->SetNpx(200);

   Int_t a = 20;

   for (int i=a; i>=1; i--) {

      f4 = new TF1(Form("f4b_%d",i),"x*sin(x+10)*[0]/[1]+25",1,21);

      f4->SetParameter(0,i);

      f4->SetParameter(1,a);

      f4->SetNpx(200);

      f4->SetLineWidth(1); f4->SetLineColor(i+10);

      f4->Draw("same");

      f4 = new TF1(Form("f4c_%d",i),"x*cos(x+10)*sin(x+10)*[0]/[1]+25",1,25);

      f4->SetParameter(0,i);

      f4->SetParameter(1,a);

      f4->SetNpx(200);

      f4->SetLineWidth(1); f4->SetLineColor(i+30); f4->Draw("same");

   }

   TPaveText *pave3 = new TPaveText(1.2,8,9,15);

   pave3->SetFillColor(42);

   pave3->AddText("Log scale along X and Y axis.");

   pave3->SetTextFont(42);

   pave3->SetTextAlign(12);

   pave3->AddText("More Log labels on both.");

   pave3->AddText("The labels have no exponents (they would be 0 or 1)");

   pave3->Draw();

}