Qt Charts so slow

[AlbertoCasasOrtiz]

In applications generating a chart, when the chart is too big, it takes too much time to generate.

Looks like the current way of adding the chart using QML (appending each point inside a for loop, is slow). Seems like using qml, the series cannot be created dynamically in other way.

Options:

1. Look for a way of optimise it.
2. Look for an alternative to Qt Charts. (like https://www.qcustomplot.com/)

[AlbertoCasasOrtiz]

The problem was a for loop in qml, that appended each point to the LineSeries one by one.

Now, the LineSeries is created directly in C++, so it is almost instantaneous. Working even with m=500000.