QCPDataMap *Layout2D::generateDataMap(Column *xData, Column *yData, int from,
int to) {
QCPDataMap *dataMap = new QCPDataMap();
double xdata = 0, ydata = 0;
for (int i = from; i < to + 1; i++) {
xdata = xData->valueAt(i);
ydata = yData->valueAt(i);
dataMap->insert(xdata, QCPData(xdata, ydata));
}
return dataMap;
}
void MainWindow::setupGraphTest(QCustomPlot *customPlot)
{
customPlot->addGraph();
QCPDataMap *dataMap = new QCPDataMap;
int n = 10e6;
QTime t;
t.start();
for (int i=0; i<n; ++i)
{
dataMap->insert(i, QCPData(i, i));
}
qDebug() << "data" << t.restart();
customPlot->graph(0)->setData(dataMap, false);
qDebug() << "set" << t.restart();
customPlot->xAxis->setRange(0, 50);
customPlot->yAxis->setRange(-1, 1);
t.restart();
customPlot->replot();
qDebug() << "replot" << t.restart();
//customPlot->rescaleAxes();
}