Have an easy way to align vertically charts

It may be desirable to align multiple charts together vertically when they share the same X Axis.

This simple desire proves out to be currently challenging when the charts's Y axis width are different.

I have documented my thoughts in the forum at:

https://forum.qt.io/topic/109997/i-had-an-incredible-hard-time-to-align-horizontally-3-charts-qt-5-13-2

Being able to control the Y-axis label width with:
 m_YAxis->setLabelFormat("%6d");
{{}}was my first reasonable attempt.

Next attempted to make the shortest plotarea chart drive the other 2 and I did stumble into a weird resizing problem. (I will open up another ticket to track the resizing issue).{{}}

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