LineChart: one line with different colors

[rguardia]

Hello,

I want to plot a LineChart using diffrent colors for the same QLineSeries. I have been searching but I found nothing. Does anyone know if this is possible with Qt?

I attach a photo to show what I would like to do.

Thanks

[rguardia]

I found a kind of solution to do this using gradients. It is probably not the best way but by now it accomplishes the goal.

QLinearGradient gradient(0,0,0,1);
gradient.setColorAt(0, Qt::blue);
gradient.setColorAt(threshold_low-0.1, Qt::blue);
gradient.setColorAt(threshold_low, Qt::gray);
gradient.setColorAt(threshold_up, Qt::gray);
gradient.setColorAt(threshold_up+0.1, Qt::red);
gradient.setColorAt(1, Qt::red);
gradient.setCoordinateMode(QGradient::StretchToDeviceMode);
QPen pen(QBrush(gradient), 2);