DxChartSeriesValueErrorBar.Type Property

Specifies how the Chart component calculates error bar values.

Assembly : DevExpress.Blazor.v25.2.dll

Declaration

csharp

[Parameter]
public ChartValueErrorBarType Type { get; set; }

Property Value

Type	Description
ChartValueErrorBarType

An enumeration value.

Available values:

Name	Description
None

Obtains error values from data source fields specified by HighValueField and LowValueField properties.

| | Percent |

Error bars display percentage of argument values. Percentage factor is specified by the Value property.

| | StdError |

Indicates the standard error. You can specify a coefficient to adjust the function result (use the Value property).

| | StdDeviation |

Indicates the standard deviation. You can specify a coefficient to adjust the function result (use the Value property).

| | Variance |

Indicates variance. You can specify a coefficient to adjust the function result (use the Value property).

| | Fixed |

Error bars display constant values specified by the Value property.

Remarks

The DxChart component allows you to calculate error bar values based on a calculation algorithm. To enable this functionality, specify Type and Value properties.

Based on the Type property value, the Value property applies as follows:

FixedSpecifies constant error values.PercentSpecifies percentages of series point values.StdErrorMultiplies the calculated standard error.StdDeviationMultiplies the calculated standard deviation.VarianceMultiplies the calculated variance.NoneDoes not apply. The chart component obtains error bar values from data source fields.

Razor
DataSource.cs

razor

@inject IChartAverageTemperatureDataProvider ChartAverageTemperatureDataProvider
<DxChart Data="@DataSource">
    @* ... *@
    <DxChartLineSeries Pane="TopPane"
                       Name="@LineSeriesName"
                       ArgumentField="@((AverageTemperatureData i) => i.Month)"
                       ValueField="@((AverageTemperatureData i) => i.AverageTemperature)">
        <DxChartSeriesValueErrorBar LowValueField="@nameof(AverageTemperatureData.AverageLowTemperature)"
                                    HighValueField="@nameof(AverageTemperatureData.AverageHighTemperature)"
                                    LineWidth="1"
                                    Opacity="0.8"/>
    </DxChartLineSeries>
    <DxChartBarSeries Pane="BottomPane"
                      Name="@BarSeriesName"
                      ArgumentField="@((AverageTemperatureData i) => i.Month)"
                      ValueField="@((AverageTemperatureData i) => i.AverageHumidity)">
        <DxChartSeriesValueErrorBar Type="ChartValueErrorBarType.Fixed"
                                    Value="@ErrorBarValue"
                                    LineWidth="1" />
    </DxChartBarSeries>
    @* ... *@
</DxChart>

@code {
    IEnumerable<AverageTemperatureData> DataSource = Enumerable.Empty<AverageTemperatureData>();
    double ErrorBarValue = 6;
    protected override void OnInitialized() {
        DataSource = ChartAverageTemperatureDataProvider.GenerateData();
    }
    // ...
}

csharp

public List<AverageTemperatureData> GenerateData() {
    List<AverageTemperatureData> result = new List<AverageTemperatureData> {
        // ...
        new AverageTemperatureData {
            Month = "March",
            AverageTemperature = 15.6,
            AverageLowTemperature = 10.6,
            AverageHighTemperature = 20.4,
            AverageHumidity = 79
        },
        // ...
    };
    return result;
}