Technical facts

Operating system(s) or programming environment(s)

Lubuntu 15.04 (vivid)

IDE(s):

Qt Creator 3.1.1

Project type:

Console application

C++ standard:

C++98

Compiler(s):

G++ 4.9.2

Libraries used:

STL: GNU ISO C++ Library, version 4.9.2

Qt project file: ./CppQwtExample6/CppQwtExample6.pro


#Qwt does not go together with Qwt

include(../../DesktopApplicationNoWeffcpp.pri)

include(../../Libraries/Qwt.pri)



SOURCES += main.cpp

./CppQwtExample6/main.cpp


#pragma GCC diagnostic push

#pragma GCC diagnostic ignored "-Weffc++"

#pragma GCC diagnostic ignored "-Wunused-local-typedefs"

#pragma GCC diagnostic ignored "-Wunused-but-set-parameter"

#include <boost/math/constants/constants.hpp>

#include <boost/shared_ptr.hpp>

#include <boost/make_shared.hpp>



#include <QApplication>



#include "qwt_plot.h"

#include "qwt_plot_curve.h"

#include "qwt_text.h"



#if QWT_VERSION >= 0x060100 || !WIN32

#include "qwt_point_data.h"

#endif

#pragma GCC diagnostic pop



int main(int argc, char *argv[])

{

  QApplication a(argc, argv);



  const auto curve = boost::make_shared<QwtPlotCurve>("Sine");

  const auto plot = boost::make_shared<QwtPlot>();

  const double tau = boost::math::constants::two_pi<double>();



  plot->setGeometry(8,32,640,400);

  plot->setAxisScale(QwtPlot::xBottom,0.0,tau);

  plot->setAxisScale(QwtPlot::yLeft,-1.0,1.0);

  std::vector<double> xs;

  std::vector<double> ys;

  for (double x = 0.0; x < tau; x+= (tau / 100.0))

  {

    xs.push_back(x);

    ys.push_back(std::sin(x));

  }

  #if QWT_VERSION >= 0x060100 || !WIN32

  const auto data = boost::make_shared<QwtPointArrayData>(&xs[0],&ys[0],xs.size());

  curve->setData(data.get());

  #else

  curve->setData(&xs[0],&ys[0],xs.size());

  #endif

  curve->attach(plot.get());

  plot->replot();

  plot->show();

  return a.exec();

}

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(C++) QwtExample6

Technical facts

Qt project file: ./CppQwtExample6/CppQwtExample6.pro

./CppQwtExample6/main.cpp