Exception calling QChart::removeAllSeries

[Perdrix]

Class has a QLineSeries, and QChart

	QLineSeries scoreSeries;
	QChart scoreChart;

and a chart view that was set using:

	chartView->setChart(&scoreChart);

If I have a datapoint I want to add I call:

scoreSeries.append(x, fScore); scoreChart.removeAllSeries(); scoreChart.addSeries(&scoreSeries);

thinking that would refresh display of the ChartView.

The first time I called that it worked, but when I added the second point to the series I get this:

1. I don't think that should happen!
2. Am I doing this all wrong?
3. If I have got it wrong what should I do?

Thanks
David

[JonB]

@Perdrix said in Exception calling QChart::removeAllSeries:

scoreChart.addSeries(&scoreSeries);

My guess would be that QChart expects all QLineSeries (any series) added to it to be on the heap, not stack, and does deletes on them. Try that and everything is then OK?

[Perdrix]

@JonB Yes that was part of it plus RemoveAll also deleted the line series, so now I have:

if (nullptr != scoreSeries)
	scoreChart.removeSeries(scoreSeries);
else
	scoreSeries = new QLineSeries(this);

scoreSeries->append(x, fScore); 		scoreChart.addSeries(scoreSeries);
scoreChart.createDefaultAxes();