WidthIntervalNumericScaleOptions Class

The options that provide means to create axis intervals with a specified width.

Namespace: DevExpress.Xpf.Charts

Assembly: DevExpress.Xpf.Charts.v20.1.dll

Declaration

public class WidthIntervalNumericScaleOptions :
    IntervalNumericScaleOptions
Public Class WidthIntervalNumericScaleOptions
    Inherits IntervalNumericScaleOptions

Remarks

The AxisX2D.NumericScaleOptions property allows you to assign the WidthIntervalNumericScaleOptions object to the axis.

Use the Width property to specify the axis interval width. The number of intervals is automatically calculated.

To create a histogram with a given number of bins, use the CountIntervalNumericScaleOptions class.

Examples

This example demonstrates how to create a histogram chart with bins of a given width.

The code below configures a histogram for a chart with a numeric x-axis scale.

<dxc:ChartControl x:Name="chartControl">
    <dxc:XYDiagram2D>
        <dxc:XYDiagram2D.AxisX>
            <dxc:AxisX2D TickmarksMinorVisible="False" 
                         GridLinesVisible="True">
                <dxc:AxisX2D.NumericScaleOptions>
                    <!-- Configure a histogram with the specified number of bins. -->
                    <dxc:WidthIntervalNumericScaleOptions AggregateFunction="Histogram" 
                                                          Width="10"
                                                          OverflowValue="20"
                                                          UnderflowValue="-30"
                                                          GridLayoutMode="GridAndLabelCentered"
                                                          Pattern="{}{OB}{A1:F0}; {A2:F0}{CB}"
                                                          OverflowValuePattern="{}{OS} {A1:F0}"
                                                          UnderflowValuePattern="{}{US} {A2:F0}"/>
                    <!--...-->                                                                  
                </dxc:AxisX2D.NumericScaleOptions>
                <dxc:AxisX2D.WholeRange>
                    <dxc:Range SideMarginsValue="0.8"/>
                </dxc:AxisX2D.WholeRange>
                <dxc:AxisX2D.Title>
                    <dxc:AxisTitle Content="Temperature (°C)" FontSize="14" Margin="0" Padding="0"/>
                </dxc:AxisX2D.Title>
            </dxc:AxisX2D>
        </dxc:XYDiagram2D.AxisX>
        <dxc:BarSideBySideSeries2D  DisplayName="Temperature" 
                                    DataSource="{Binding}" 
                                    ArgumentDataMember="Temperature" 
                                    BarWidth="1">
        </dxc:BarSideBySideSeries2D>
    </dxc:XYDiagram2D>
</dxc:ChartControl>

The following API members configure the histogram options:

Member Description
WidthIntervalNumericScaleOptions The options that provide means to create axis intervals with a specified width.
ManualNumericScaleOptions.AggregateFunction Gets or sets the function that is used to aggregate numeric axis data when one of the AxisX2D.NumericScaleOptions, AxisX3D.NumericScaleOptions, or CircularAxisX2D.NumericScaleOptions properties is set to ManualNumericScaleOptions.
WidthIntervalNumericScaleOptions.Width Gets or sets the interval width in x-axis measurement units.
IntervalNumericScaleOptions.OverflowValue Gets or sets the start value for the interval that includes overflow values.
IntervalNumericScaleOptions.UnderflowValue Gets or sets the end value for the interval that includes underflow values.
IntervalNumericScaleOptions.GridLayoutMode Gets or sets the value that specifies the alignment of grid lines, major tickmarks and axis labels.
IntervalNumericScaleOptions.Pattern Gets or sets a format string that configures text for the interval axis labels and crosshair labels.
IntervalNumericScaleOptions.OverflowValuePattern Gets or sets a format string that configures text for the overflow interval axis labels and crosshair labels.
IntervalNumericScaleOptions.UnderflowValuePattern Gets or sets a format string that configures text for the underflow interval axis labels and crosshair labels.
See Also