[vtkusers] Setting the X-Axis with vtkQtLineChartView ?

[da]

Hi folks,

I would like to set the X-Axis of a vtkQtLineChartView to correspond to the
X-Coordinate of a point while my Y-Axis corresponds to the scalar point data
at that point.

I've tried doing

vtkQtChartAxis *axis =
internals->lineChart->GetAxis(vtkQtChartAxis::Bottom);
vtkQtChartAxisModel *axisModel = axis->getModel();
axisModel->removeAllLabels();
axisModel->addLabel(QVariant((float)1500));
        ...

but it still ended up starting at 1.

Attached is a screenshot of what I have now, how can I set the X-Axis to
refer to the data's X-coordinate value instead of just an index that starts
at 1?
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