#include

#include plotcurve.h>

#include pointdata.h>

int main(int argc, char argv[])
{
QApplication app(argc, argv);

// 創(chuàng)建繪圖窗口
QwtPlot plot = new QwtPlot();
plot->setTitle("QWT Demo - 正弦曲線");
plot->setCanvasBackground(Qt::white);

// 設(shè)置坐標(biāo)軸標(biāo)簽
plot->setAxisTitle(QwtPlot::xBottom, "X軸");
plot->setAxisTitle(QwtPlot::yLeft, "Y軸");

// 創(chuàng)建曲線數(shù)據(jù)
QVector points;
for (double x = 0; x < 10; x += 0.1) {
points.append(QPointF(x, qSin(x)));
}

// 創(chuàng)建曲線
QwtPlotCurve *curve = new QwtPlotCurve();
curve->setTitle("正弦波");
curve->setPen(Qt::blue, 2);
curve->setSamples(points);
curve->attach(plot);

plot->resize(600, 400);
plot->show();

return app.exec();
}
`

儀表盤示例