DxPolarChartValueAxis Class

Defines a Polar Chart’s value axis.

Assembly: DevExpress.Blazor.v24.1.dll

Declaration

public class DxPolarChartValueAxis :
    DxChartAxisBase<PolarChartValueAxisModel>,
    IModelProvider<ChartAxisLabelBaseModel>

Remarks

You can use properties of the DxChartAxisBase<T> and DxPolarChartValueAxis objects to configure value axis settings and appearance.

The following code snippet customizes the value axis:

Linear Threshold

<DxPolarChart Data="@GetData()">
    <DxChartLegend Visible="false" />
    <DxPolarChartArgumentAxis Type="ChartAxisType.Discrete" 
                              StartAngle="25" />
    <DxPolarChartValueAxis Type="ChartAxisType.Logarithmic" 
                           LogarithmBase="2" 
                           LinearThreshold="4" />
    <DxPolarChartLineSeries ArgumentField="@((DataPoint s) => s.Argument)" 
                            ValueField="@((DataPoint s) => s.Value)"
                            Closed="false" />
</DxPolarChart>

@code {
    List<DataPoint> GetData() {
        List<DataPoint> result = new List<DataPoint>(11);
        result.Add(new DataPoint("Silence", 0));
        result.Add(new DataPoint("Breathing", 0.075));
        result.Add(new DataPoint("Whisper", 0.15));
        result.Add(new DataPoint("Street noise", 8));
        result.Add(new DataPoint("Jackhammer", 32));
        result.Add(new DataPoint("Subway train", 64));
        result.Add(new DataPoint("Loud music", 128));
        result.Add(new DataPoint("Pain threshold", 256));
        result.Add(new DataPoint("Buzzer", 512));
        result.Add(new DataPoint("Rocket launch", 2048));
        result.Add(new DataPoint("Deadly level", 16348));
        return result;
    }

    struct DataPoint {
        public DataPoint (string argument, double value) { Argument = argument; Value = value; }
        public string Argument { get; set; }
        public double Value { get; set; }
    }
}

Nested Axis Components

You can add the following child components to a value axis:

DxChartAxisLabel: Defines settings for axis labels.
DxChartConstantLine: Specifies an axis constant line.

The following example demonstrates components of the value axis:

Value Axis Nested Elements

<DxPolarChart T="DataItem" Data=@data>
    <DxPolarChartValueAxis>
        <DxChartConstantLine Value="1.5" />
        <DxChartAxisLabel IndentFromAxis="15" />
    </DxPolarChartValueAxis>
    @* ... *@
</DxPolarChart>