How to: Use a Custom Measure Unit in Automatic Numeric Scale Mode
To use a custom numeric scale in Automatic scale mode, assign an object of a class implementing the INumericMeasureUnitsCalculator interface to the AutomaticDateTimeScaleOptions.AutomaticMeasureUnitsCalculator property of an AutomaticNumericScaleOptions object assigned to AxisX2D.NumericScaleOptions.
<dxc:XYDiagram2D.AxisX>
<dxc:AxisX2D>
<dxc:AxisX2D.NumericScaleOptions>
<dxc:AutomaticNumericScaleOptions>
<dxc:AutomaticNumericScaleOptions.AutomaticMeasureUnitsCalculator>
<local:NumericMeasureUnitsCalculator/>
</dxc:AutomaticNumericScaleOptions.AutomaticMeasureUnitsCalculator>
</dxc:AutomaticNumericScaleOptions>
</dxc:AxisX2D.NumericScaleOptions>
</dxc:AxisX2D>
</dxc:XYDiagram2D.AxisX>