I'm trying to set up 3 separate charts in my Qt form, but I can't seem to get them to display any data.
For example, I have this code setup:
#include "../QCustomPlot/qcustomplot.h" #include <QPen> #include <QColor> MainFrm::MainFrm(QWidget *parent) : QMainWindow(parent), ui(new Ui::MainFrm) { QPen linePen; linePen.setStyle(Qt::SolidLine); linePen.setWidthF(2.5); linePen.setColor(QColor(0, 0, 255)); QPen scatterPen; scatterPen.setStyle(Qt::DotLine); scatterPen.setWidth(1); scatterPen.setColor(QColor(0, 0, 255)); ui->lineChart->setBackground(QBrush(QColor(238, 238, 238))); ui->lineChart->addGraph(); ui->lineChart->graph(0)->clearData(); ui->lineChart->graph(0)->setPen(linePen); ui->lineChart->graph(0)->setLineStyle(QCPGraph::lsLine); ui->lineChart->xAxis->setTickLabels(true); ui->lineChart->yAxis->setTickLabels(true); ui->scatterChart->setBackground(QBrush(QColor(238, 238, 238))); ui->scatterChart->addGraph(); ui->scatterChart->graph(0)->clearData(); ui->scatterChart->graph(0)->setPen(scatterPen); ui->scatterChart->graph(0)->setLineStyle(QCPGraph::lsNone); ui->scatterChart->graph(0)->setScatterStyle(QCPScatterStyle(QCPScatterStyle::ssCircle, 4)); ui->scatterChart->xAxis->setTickLabels(true); ui->scatterChart->yAxis->setTickLabels(true); ui->scatterChart2->setBackground(QBrush(QColor(238, 238, 238))); ui->scatterChart2->addGraph(); ui->scatterChart2->graph(0)->clearData(); ui->scatterChart2->graph(0)->setPen(scatterPen); ui->scatterChart2->graph(0)->setLineStyle(QCPGraph::lsNone); ui->scatterChart2->graph(0)->setScatterStyle(QCPScatterStyle(QCPScatterStyle::ssCircle, 4)); ui->scatterChart2->xAxis->setTickLabels(true); ui->scatterChart2->yAxis->setTickLabels(true); }
And I try to add data in a separate function:
void MainFrm::addValues() { double value1 = 0.000001; double value2 = 0.000010; this->ui->scatterChart->graph(0)->clearData(); this->ui->scatterChart->graph(0)->addData(value1, value2); this->ui->scatterChart->rescaleAxes(); }
But when the addValues function is called, no data appears in the selected chart. Is there something I'm doing wrong? The code compiles fine, I have promoted the QWidgets to QCustomPlot correctly, and I have included printsupport for Qt version 5.5.1.