qwtTest002.pro
#-------------------------------------------------
#
# Project created by QtCreator 2013-11-29T11:23:42
#
#-------------------------------------------------
QT += core gui
CONFIG += qwt
greaterThan(QT_MAJOR_VERSION, 4): QT += widgets
TARGET = qwtTest002
TEMPLATE = app
SOURCES += main.cpp\
plot.cpp
HEADERS += plot.h
FORMS += plot.ui
plot.h
#ifndef PLOT_H
#define PLOT_H
#include <QMainWindow>
#include <qwt_plot.h>
namespace Ui {
class Plot;
}
class Plot : public QwtPlot
{
Q_OBJECT
public:
explicit Plot(QWidget *parent = 0);
~Plot();
private:
Ui::Plot *ui;
};
#endif // PLOT_H
main.cpp#include "plot.h"
#include <QApplication>
int main(int argc, char *argv[])
{
QApplication a(argc, argv);
Plot w;
w.show();
return a.exec();
}
plot.cpp
#include "plot.h"
#include "ui_plot.h"
Plot::Plot(QWidget *parent) :
QwtPlot(parent)
{
setTitle( "Plot Demo" );//グラフのタイトル
}
Plot::~Plot()
{
//ウインドウ終了
}
examples フォルダにある。simpleplot を参考に書いてみる。
plot.cpp
#include "plot.h"
#include "ui_plot.h"
#include <qwt_plot.h>
#include <qwt_plot_curve.h>
#include <qwt_plot_grid.h>
#include <qwt_symbol.h>
#include <qwt_legend.h>
Plot::Plot(QWidget *parent) :
QwtPlot(parent)
{
setTitle( "Plot Demo" );//グラフのタイトル
setCanvasBackground( Qt::white );
setAxisScale( QwtPlot::yLeft, 0.0, 10.0 );
insertLegend( new QwtLegend() );
QwtPlotGrid *grid = new QwtPlotGrid();
grid->attach( this );
QwtPlotCurve *curve = new QwtPlotCurve();
curve->setTitle( "Some Points" );
curve->setPen( Qt::blue, 4 ),
curve->setRenderHint( QwtPlotItem::RenderAntialiased, true );
QwtSymbol *symbol = new QwtSymbol( QwtSymbol::Ellipse,
QBrush( Qt::yellow ), QPen( Qt::red, 2 ), QSize( 8, 8 ) );
curve->setSymbol( symbol );
QPolygonF points;
points << QPointF( 0.0, 4.4 ) << QPointF( 1.0, 3.0 )
<< QPointF( 2.0, 4.5 ) << QPointF( 3.0, 6.8 )
<< QPointF( 4.0, 7.9 ) << QPointF( 5.0, 7.1 );
curve->setSamples( points );
curve->attach( this );
resize( 600, 400 );
}
Plot::~Plot()
{
//ウインドウ終了
}
