GUI: plotting intensity profiles via SubframeExperiment/HIstograms generates stderr warnings
of this type:
virtual double QCPAbstractPlottable1D<QCPGraphData>::dataMainKey(int) const [DataType = QCPGraphData] Index out of bounds 502
of this type:
virtual double QCPAbstractPlottable1D<QCPGraphData>::dataMainKey(int) const [DataType = QCPGraphData] Index out of bounds 502