When RadCartesianChart visualizes CategoricalSeries, it needs an axis that can represent the different categories. Categories are built depending on the CategoryBinding value of each categorical data point in the owning CategoricalSeries. The axis is divided into discrete slots and each data point is visualized in the slot corresponding to its categorical value.

The CategoricalAxis inherits from the base Axis class. You can see the inherited properties here.


  • GapLength : Defines the distance (in logical units [0,1]) between two adjacent categories. Default value is 0.3. For example if you have BarSeries, you can decrease the space between the bars from the different categories by setting the GapLength to a value lower than 0.3.

  • MajorTickInterval : Defines the step at which major ticks are generated. The default value is 1. This property will also affect axis labels as they are generated on a per major tick basis.

  • PlotMode : Defines the strategy used to position data points along the axis category slots. The possible values are:

    • BetweenTicks
    • OnTicks


<telerikChart:RadCartesianChart SelectionPaletteName="LightSelected">

    <telerikChart:CategoricalAxis PlotMode="OnTicks" MajorTickInterval="2" GapLength="0.5"/>
    <telerikChart:BarSeries ItemsSource="{Binding CategoricalData}">
        <telerikChart:PropertyNameDataPointBinding PropertyName="Value"/>
        <telerikChart:PropertyNameDataPointBinding PropertyName="Category"/>