Can anyone advise why this code will not put my third plot on the right hand axis. As it is, All three graphs are on the left hand y axis, the right hand title is printed, but no tick labels and ticks are based around the LH units.
Appologies if it is very poor, it is the first time I have tried programming in 10 years...
case 7://Obstacle avoidance ui->mainPlot->addGraph(ui->mainPlot->xAxis, ui->mainPlot->yAxis); ui->mainPlot->graph(0)->setPen(QPen(Qt::blue)); ui->mainPlot->addGraph(ui->mainPlot->xAxis, ui->mainPlot->yAxis); ui->mainPlot->graph(1)->setPen(QPen(Qt::red)); ui->mainPlot->addGraph(ui->mainPlot->xAxis, ui->mainPlot->yAxis2);// use RH axis ui->mainPlot->graph(2)->setPen(QPen(Qt::green)); // read data from table for (int i=0; i<rows; ++i) { QModelIndex index = plotTableView->model()->index(i,EPOCH_DATE); x[i] = index.data().toDouble()/1000; index = plotTableView->model()->index(i,OBS_RANGE); //y0[i] = index.data().toDouble(); //use dummies in case of no data y0[i] = 20 * qCos((qreal)i / 300); index = plotTableView->model()->index(i,OBS_AMP); //y1[i] = index.data().toDouble(); y1[i] = 3+ 15 * qCos((qreal)(i+75) / 300); index = plotTableView->model()->index(i, OBS_AZ); //y2[i] = index.data().toDouble(); y2[i] = 120 * qCos((qreal)i / 300); } ui->mainPlot->yAxis->setLabel("(range - m / amplitude)"); ui->mainPlot->yAxis->setRange(-5,50); ui->mainPlot->yAxis2->setLabel("(azimuth - deg)"); ui->mainPlot->yAxis2->setVisible(true); ui->mainPlot->yAxis2->setTickLabels(true); ui->mainPlot->yAxis2->setLabelColor(Qt::green); ui->mainPlot->yAxis2->setRange(-150,150); ui->mainPlot->graph(0)->setData(x, y0); ui->mainPlot->graph(1)->setData(x, y1); ui->mainPlot->graph(2)->setData(x, y2); ui->mainPlot->graph(0)->setName(plotTableView->model()->headerData(OBS_RANGE, Qt::Horizontal).toString()); ui->mainPlot->graph(1)->setName(plotTableView->model()->headerData(OBS_AMP, Qt::Horizontal).toString()); ui->mainPlot->graph(2)->setName(plotTableView->model()->headerData(OBS_AZ, Qt::Horizontal).toString()); break;
https://file.town/download/egzyas18ietk6k1xo6jku2c3f
cheers!