ChaikinsVolatilityIndicator.PointsCount Property

Gets or sets the number of data points used to calculate the indicator.

Namespace: DevExpress.XamarinForms.Charts

Assembly: DevExpress.XamarinForms.Charts.dll

NuGet Package: DevExpress.XamarinForms.Charts

Declaration

public int PointsCount { get; set; }

Property Value

Type	Description
Int32	The number of points.

Example

This example demonstrates how to build a Chaikin’s volatility indicator for a stock series. Associate this indicator with a separate Y axis and place it below the stock series.

1. Add the ChaikinsVolatilityIndicator object to the chart’s collection of series (ChartView.Series).
2. Set the indicator’s Data property to a CalculatedSeriesDataAdapter class instance. Use this object’s Series property to specify a series for which the indicator should be calculated.
3. Use the PointsCount property to specify the number of data points used to calculate the indicator.

Xaml

<dxc:ChartView x:Name="chart">
    <dxc:ChartView.Series>
        <dxc:StockSeries>
            <dxc:StockSeries.Data>
                <dxc:SeriesDataAdapter DataSource="{Binding StockPrices}" ArgumentDataMember="Date">
                    <dxc:ValueDataMember Type="High" Member="High" />
                    <dxc:ValueDataMember Type="Low" Member="Low" />
                    <dxc:ValueDataMember Type="Open" Member="Open" />
                    <dxc:ValueDataMember Type="Close" Member="Close" />
                </dxc:SeriesDataAdapter>
            </dxc:StockSeries.Data>
        </dxc:StockSeries>

        <dxc:ChaikinsVolatilityIndicator DisplayName="Chaikin's Volatility"
                                         PointsCount="14">
            <dxc:ChaikinsVolatilityIndicator.Data>
                <dxc:CalculatedSeriesDataAdapter Series="{Binding Series[0], Source={x:Reference chart}}"/>
            </dxc:ChaikinsVolatilityIndicator.Data>
            <dxc:ChaikinsVolatilityIndicator.AxisY>
                <dxc:NumericAxisY Position="Far" AlwaysShowZeroLevel="False" GridAlignment="40">
                    <dxc:NumericAxisY.Range>
                        <dxc:NumericRange Min="-40" Max="40"/>
                    </dxc:NumericAxisY.Range>
                    <dxc:NumericAxisY.Layout>
                        <dxc:AxisLayout Anchor1="0" Anchor2="0.3"/>
                    </dxc:NumericAxisY.Layout>
                </dxc:NumericAxisY>
            </dxc:ChaikinsVolatilityIndicator.AxisY>
        </dxc:ChaikinsVolatilityIndicator>
    </dxc:ChartView.Series>

    <dxc:ChartView.AxisY>
        <dxc:NumericAxisY Position="Far" AlwaysShowZeroLevel="false" AutoRangeMode="VisibleValues">
            <dxc:NumericAxisY.Layout>
                <dxc:AxisLayout Anchor1="0.4" Anchor2="1"/>
            </dxc:NumericAxisY.Layout>
            <dxc:NumericAxisY.Label>
                <dxc:AxisLabel Position="Outside" TextFormat="$#"/>
            </dxc:NumericAxisY.Label>
        </dxc:NumericAxisY>
    </dxc:ChartView.AxisY>
</dxc:ChartView>