Hi Joshua,
Currently our control does not support Step Area as a separate series, but you can display a similar chart with the help of the Range series.
Regarding the axis - you can set the View range of an axis like this. In this case the min value of the axis will be 0:
chart.Axis(StandardAxis.PrimaryY).View = new NRangeAxisView(new NRange1DD(0, 0), true, false);
Hope this helps – questions or comments, please feel free.
Nevron Support Team
Best Regards,
Nevron Support Team