Your comments
You can use the `Transform` method of the axis to get the length on the screen, but it will be a bit difficult to calculate the scale of the other axis. I think you need to consider the width of the control, the margins, and set the `Minimum` and `Maximum` of the second axis.
I think this should be covered by the following feature request: https://github.com/oxyplot/oxyplot/issues/13
I think this should be covered by the following feature request: https://github.com/oxyplot/oxyplot/issues/13
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Here is an example using WebAPI:
The result is: