In order to change the scale configurator for a particular axis you need to create an instance of the scale configurator that you want to apply and assign it to the scale configurator property of the respective axis. The following code shows how to change the scale configurator of the primary X axis to numeric so that it can better handle numeric data (commonly used when you need to display XY or XYZ scatter charts):

NChart chart = chartControl.Charts[0];
NAxis primaryX = chart.Axis(StandardAxis.PrimaryX);

NLinearScaleConfigurator linearScaleConfigurator = new NLinearScaleConfigurator();
primaryX.ScaleConfigurator = linearScaleConfigurator;

Dim chart As NChart = chartControl.Charts(0)
Dim primaryX As NAxis = chart.Axis(StandardAxis.PrimaryX)

Dim linearScale As New NLinearScaleConfigurator
primaryX.ScaleConfigurator = linearScale

Windows Forms: Axes \ Scaling \ Date Time Scale

Windows Forms: Axes \ Scaling \ Ordinal Scale

Windows Forms: Axes \ Scaling \ Numeric Scale

Windows Forms: Axes \ Scaling \ Logarithmic Scale