I'm currently subclassing QCPItemTracer to support QCPCurve.
For the updatePosition() method, I'm trying to find the curveValue from the curveKey like for graphs.
But if I understand the function curve->data()->findbegin takes the curveT as argument and not the curveKey.
QCPCurveDataContainer::const_iterator it =curve->data()->findBegin(curveKey);
My question is how can I find the curveT from the approximative curveKey to be able to use findBegin correctly ?
Thanks a lot for your help