As of now we are considering to implement zooming API & events (which would support syncing range across charts) in either v1.8 or v1.9. But haven’t decided on it yet. A rough estimate as of now would be 2-3 months.
When it comes to aligning axisY’s line, only workaround that I see as of now would be to Zero pad the Y Axis labels by setting valueFormatString of axisY to something like “#,000.##” and set appropriate intervals.
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Sunil Urs
