I am using QtCharts to display simulation data. The simulation starts at time zero, but my chart axis always seems to start at 19 hours. This confounds me. The set up of the chart is straight forward:
std::vector<SimData> data;
// ... Populate data
auto series = new QLineSeries();
for(auto i : data)
{
// Append time in milliseconds and a value
series->append(i.msTime, i.value);
}
this->legend()->hide();
this->addSeries(series);
this->axisX = new QDateTimeAxis;
this->axisX->setTickCount(10);
this->axisX->setFormat("HH:mm:ss");
this->axisX->setTitleText("Sim Time");
this->axisX->setMin(QDateTime());
this->addAxis(this->axisX, Qt::AlignBottom);
series->attachAxis(this->axisX);
this->axisY = new QValueAxis;
this->axisY->setLabelFormat("%i");
this->axisY->setTitleText(x->getID().c_str());
this->addAxis(this->axisY, Qt::AlignLeft);
series->attachAxis(this->axisY);
If I run with no data, but just display the chart, I get this:
If I add data, starting at time zero, the total amount of data is correct, but the time still starts at 19:00:00. Why does the time not start at 00:00:00?