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Scatter series documentation; now uses snippets
Scatter series documentation; now uses snippets

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main.cpp
66 lines | 1.7 KiB | text/x-c | CppLexer
#include <QtGui/QApplication>
#include <QMainWindow>
#include <qchartglobal.h>
#include <qchartview.h>
#include <qscatterseries.h>
QTCOMMERCIALCHART_USE_NAMESPACE
int main(int argc, char *argv[])
{
QApplication a(argc, argv);
//! [1]
// Create chart view
QChartView *chartView = new QChartView();
// Add scatter series with simple test data
QScatterSeries *scatter = new QScatterSeries();
*scatter << QPointF(0.5, 5.0)
<< QPointF(1.0, 4.5)
<< QPointF(1.0, 5.5)
<< QPointF(1.5, 5.0)
<< QPointF(2.0, 4.5)
<< QPointF(2.5, 5.0);
// Chart takes ownership
chartView->addSeries(scatter);
//! [1]
// Add some more data
//! [2]
scatter->addData(QPointF(2.0, 5.5));
//! [2]
// And more
//! [3]
*scatter << QPointF(2.0, 5.5);
//! [3]
// Add another scatter series (re-use the previous pointer)
// - more data with random component
scatter = new QScatterSeries();
for (qreal i(0.0); i < 20; i += 0.15) {
(*scatter) << QPointF(i + (qreal)(rand() % 100) / 100.0,
i + (qreal)(rand() % 100) / 100.0);
}
//! [4]
QBrush brush(QColor(255, 0, 0, 100), Qt::SolidPattern);
scatter->setMarkerBrush(brush);
//! [4]
//! [5]
QPen pen(QColor(0, 255, 0, 80), 3);
scatter->setMarkerPen(pen);
//! [5]
//! [6]
scatter->setMarkerShape(QScatterSeries::MarkerShapeRectangle);
//! [6]
chartView->addSeries(scatter);
// Use the chart widget as the central widget
QMainWindow w;
w.resize(640, 480);
w.setCentralWidget(chartView);
w.show();
return a.exec();
}