Both axis the same scale

I need to display this series:



Please note that it has the shape of a circle, going from -4 to 4, but as the horizontal axis is longer my circle is deformed (is an ellipse).

How can I coerce both axis to have the same scale? And this way achieve displaying a more circular shape:



I need to do this automatically, I can't set it manually for each dataset. I can't use angle axis either.

Thanks

Try to set yourPlot.PlotType = PlotType.Cartesian
See the examples!

Thanks, but it seems to not reseting the axis when I plot it again. I'll reset the axis manually in this case.