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raxis.cxx File Reference

Detailed Description

This ROOT7 example demonstrates how to create a RCanvas and draw several RAxis objects with different options.

#include <ROOT/RCanvas.hxx>
#include "TDatime.h"
// macro must be here while cling is not capable to load
// library automatically for outlined function see ROOT-10336
R__LOAD_LIBRARY(libROOTGpadv7)
void raxis()
{
using namespace ROOT::Experimental;
// Create a canvas to be displayed.
auto canvas = RCanvas::Create("RAxis examples");
auto x1 = 0.08_normal, w1 = 0.36_normal, x2 = 0.57_normal, w2 = 0.36_normal;
auto draw0 = canvas->Draw<RAxisDrawable>(RPadPos(0.03_normal,0.1_normal), true, 0.8_normal);
draw0->axis.ticks.SetInvert();
draw0->axis.ticks.size = 0.02_normal;
draw0->axis.title = "vertical";
auto draw1 = canvas->Draw<RAxisDrawable>(RPadPos(x1, 0.9_normal), false, w1);
draw1->axis.title = "horizontal";
draw1->axis.title.SetCenter();
auto draw2 = canvas->Draw<RAxisDrawable>(RPadPos(x1, 0.7_normal), false, w1);
draw2->axis.ticks.SetBoth();
draw2->axis.ticks.size = 0.02_normal;
draw2->axis.title = "both side ticks";
draw2->axis.title.SetCenter();
auto draw3 = canvas->Draw<RAxisDrawable>(RPadPos(x1, 0.5_normal), false, w1);
draw3->axis.title = "center labels";
draw3->axis.labels.center = true;
auto draw4 = canvas->Draw<RAxisDrawable>(RPadPos(x1, 0.3_normal), false, w1);
draw4->axis.min = TDatime(2020,11,12,9,0,0).Convert();
draw4->axis.max = TDatime(2020,11,12,12,0,0).Convert();
draw4->axis.SetTimeDisplay("%d/%m/%y %H:%M");
draw4->axis.title = "time display";
draw4->axis.labels.size = 0.01;
draw4->axis.labels.color = RColor::kRed;
std::vector<std::string> labels = {"first", "second", "third", "forth", "fifth"};
auto draw5 = canvas->Draw<RAxisDrawable>(RPadPos(x1, 0.1_normal), false, w1);
draw5->SetLabels(labels);
draw5->axis.ticks.SetInvert();
draw5->axis.title = "labels, swap ticks side";
draw5->axis.title.SetLeft();
auto draw6 = canvas->Draw<RAxisDrawable>(RPadPos(0.5_normal,0.9_normal), true, -0.8_normal);
draw6->axis.min = 0;
draw6->axis.max = 10;
draw6->axis.ending.SetArrow();
draw6->axis.title = "vertical negative length";
auto draw7 = canvas->Draw<RAxisDrawable>(RPadPos(x2, 0.9_normal), false, w2);
draw7->axis.min = 1;
draw7->axis.max = 100;
draw7->axis.log = 10;
draw7->axis.title = "log10 scale";
draw7->axis.title.SetCenter();
draw7->axis.title.font = RAttrFont::kVerdana;
draw7->axis.title.color = RColor::kGreen;
draw7->axis.ending.SetCircle();
auto draw8 = canvas->Draw<RAxisDrawable>(RPadPos(x2, 0.7_normal), false, w2);
draw8->axis.min = 0.125;
draw8->axis.max = 128;
draw8->axis.log = 2;
draw8->axis.title = "log2 scale";
draw8->axis.title.SetCenter();
auto draw9 = canvas->Draw<RAxisDrawable>(RPadPos(x2, 0.5_normal), false, w2);
draw9->axis.min = 1;
draw9->axis.max = 100;
draw9->axis.log = 2.7182;
draw9->axis.title = "ln scale";
draw9->axis.title.SetCenter();
auto draw10 = canvas->Draw<RAxisDrawable>(RPadPos(x2+w2, 0.3_normal), false, -w2);
draw10->axis.ending.SetArrow();
draw10->axis.title = "horizontal negative length";
draw10->axis.title.SetCenter();
auto draw11 = canvas->Draw<RAxisDrawable>(RPadPos(x2, 0.1_normal), false, w2);
draw11->axis.ending.SetArrow();
draw11->axis.reverse = true;
draw11->axis.title = "horizontal reverse";
draw11->axis.title.SetCenter();
auto draw12 = canvas->Draw<RAxisDrawable>(RPadPos(0.97_normal, 0.1_normal), true, 0.8_normal);
draw12->axis.ending.SetArrow();
draw12->axis.ending.size = 0.01_normal;
draw12->axis.ticks.SetBoth();
draw12->axis.ticks.color = RColor::kBlue;
draw12->axis.ticks.size = 0.01_normal;
draw12->axis.title = "vertical axis with arrow";
draw12->axis.title.SetCenter();
canvas->SetSize(1000, 800);
// requires Chrome browser, runs in headless mode
// canvas->SaveAs("raxis.png");
canvas->Show();
}
static const double x2[5]
static const double x1[5]
#define R__LOAD_LIBRARY(LIBRARY)
Definition: Rtypes.h:472
@ kRed
Definition: Rtypes.h:66
@ kGreen
Definition: Rtypes.h:66
@ kBlue
Definition: Rtypes.h:66
This class stores the date and time with a precision of one second in an unsigned 32 bit word (950130...
Definition: TDatime.h:37
UInt_t Convert(Bool_t toGMT=kFALSE) const
Convert fDatime from TDatime format to the standard time_t format.
Definition: TDatime.cxx:182
Date
2020-11-03
Warning
This is part of the ROOT 7 prototype! It will change without notice. It might trigger earthquakes. Feedback is welcome!
Authors
Sergey Linev S.Lin.nosp@m.ev@g.nosp@m.si.de

Definition in file raxis.cxx.