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Reference Guide
logscales.C File Reference

Detailed Description

View in nbviewer Open in SWAN Draw parametric functions with log scales.

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");
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);
pad2->SetLogy();
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 = 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();
}
Author
Olivier Couet

Definition in file logscales.C.

TGraph::Draw
virtual void Draw(Option_t *chopt="")
Draw this graph with its current attributes.
Definition: TGraph.cxx:760
TPad
Definition: TPad.h:26
TF1::SetNpx
virtual void SetNpx(Int_t npx=100)
Set the number of points used to draw the function.
Definition: TF1.cxx:3453
Form
char * Form(const char *fmt,...)
Int_t
int Int_t
Definition: RtypesCore.h:45
x
Double_t x[n]
Definition: legend1.C:17
TPad::SetGridy
virtual void SetGridy(Int_t value=1)
Definition: TPad.h:329
TGraph::GetYaxis
TAxis * GetYaxis() const
Get y axis of the graph.
Definition: TGraph.cxx:1636
TPaveLabel::Draw
virtual void Draw(Option_t *option="")
Draw this pavelabel with its current attributes.
Definition: TPaveLabel.cxx:77
TF1::SetParameter
virtual void SetParameter(Int_t param, Double_t value)
Definition: TF1.h:630
TPaveText::Draw
virtual void Draw(Option_t *option="")
Draw this pavetext with its current attributes.
Definition: TPaveText.cxx:234
TF1::GetYaxis
TAxis * GetYaxis() const
Get y axis of the function.
Definition: TF1.cxx:2413
TGraph::GetXaxis
TAxis * GetXaxis() const
Get x axis of the graph.
Definition: TGraph.cxx:1626
TPad::SetLogy
virtual void SetLogy(Int_t value=1)
Set Lin/Log scale for Y.
Definition: TPad.cxx:5905
TPad::SetGridx
virtual void SetGridx(Int_t value=1)
Definition: TPad.h:328
TF1::GetXaxis
TAxis * GetXaxis() const
Get x axis of the function.
Definition: TF1.cxx:2402
a
auto * a
Definition: textangle.C:12
y
Double_t y[n]
Definition: legend1.C:17
TPaveText::AddText
virtual TText * AddText(Double_t x1, Double_t y1, const char *label)
Add a new Text line to this pavetext at given coordinates.
Definition: TPaveText.cxx:183
TPaveLabel
Definition: TPaveLabel.h:20
f1
TF1 * f1
Definition: legend1.C:11
TGraph
Definition: TGraph.h:41
TAxis::SetNoExponent
void SetNoExponent(Bool_t noExponent=kTRUE)
Set the NoExponent flag By default, an exponent of the form 10^N is used when the label value are eit...
Definition: TAxis.h:223
TCanvas
Definition: TCanvas.h:23
TF1::Draw
virtual void Draw(Option_t *option="")
Draw this function with its current attributes.
Definition: TF1.cxx:1338
TPad::cd
TVirtualPad * cd(Int_t subpadnumber=0)
Set Current pad.
Definition: TPad.cxx:594
TAxis::SetMoreLogLabels
void SetMoreLogLabels(Bool_t more=kTRUE)
Set the kMoreLogLabels bit flag When this option is selected more labels are drawn when in log scale ...
Definition: TAxis.h:213
TPaveText
Definition: TPaveText.h:21
TPad::SetLogx
virtual void SetLogx(Int_t value=1)
Set Lin/Log scale for X.
Definition: TPad.cxx:5891
TF1
1-Dim function class
Definition: TF1.h:212
c1
return c1
Definition: legend1.C:41
TPad::Draw
virtual void Draw(Option_t *option="")
Draw Pad in Current pad (re-parent pad if necessary).
Definition: TPad.cxx:1285