IntervalDateTimeScaleOptions Class

Stores options for the date-time x-axis whose scale is divided into intervals.

Assembly: DevExpress.Xpf.Charts.v23.2.dll

NuGet Package: DevExpress.Wpf.Charts

Declaration

C#
VB.NET

public class IntervalDateTimeScaleOptions :
    ManualDateTimeScaleOptions

Public Class IntervalDateTimeScaleOptions
    Inherits ManualDateTimeScaleOptions

Remarks

Use the IntervalDateTimeScaleOptions class to specify the DateTimeScaleOptions property.

The IntervalDateTimeScaleOptions class introduces the following properties:

OverflowValue and UnderflowValue specify the overflow and underflow interval thresholds.
Pattern formats the interval-related text for axis and crosshair labels.
OverflowValuePattern and UnderflowValuePattern formats text for the overflow and underflow intervals.

Example

This example demonstrates how to create a histogram chart based on date-time values.

Use the following API members to configure histogram options:

Member	Description
`IntervalDateTimeScaleOptions`	Stores options for the date-time x-axis whose scale is divided into intervals.
ManualDateTimeScaleOptions.AggregateFunction	Gets or sets the function that is used to aggregate date-time axis data when one of the AxisX2D.DateTimeScaleOptions, AxisX3D.DateTimeScaleOptions, or RadarAxisX2D.DateTimeScaleOptions properties is set to ManualDateTimeScaleOptions.
OverflowValue	Gets or sets the overflow interval’s start value.
UnderflowValue	Gets or sets the underflow interval’s end value.
Pattern	Gets or sets a format string that configures text for the axis label and crosshair label.
OverflowValuePattern	Gets or sets a format string that configures text for the overflow interval axis label and crosshair label.
UnderflowValuePattern	Gets or sets a format string that configures text for the underflow interval axis label and crosshair label.

XAML

<dxc:ChartControl x:Name="chartControl" 
                  Width="480" Height="270">
    <dxc:XYDiagram2D>
        <dxc:XYDiagram2D.AxisX>
            <dxc:AxisX2D TickmarksMinorVisible="False" 
                         GridLinesVisible="True">
                <dxc:AxisX2D.DateTimeScaleOptions>
                    <!-- Configure histogram options. -->
                    <dxc:IntervalDateTimeScaleOptions AggregateFunction="Histogram"
                                                      OverflowValue="2019/01/20" 
                                                      UnderflowValue="2019/01/10"                  
                                                      Pattern="{}{A1:MMM dd} - {A2:MMM dd}"
                                                      OverflowValuePattern="After {A1: MMM dd}"
                                                      UnderflowValuePattern="Before {A2: MMM dd}"/>
                    <!--...-->
                </dxc:AxisX2D.DateTimeScaleOptions>
                <dxc:AxisX2D.WholeRange>
                    <dxc:Range SideMarginsValue="0.8" AutoSideMargins="False"/>
                </dxc:AxisX2D.WholeRange>
            </dxc:AxisX2D>
        </dxc:XYDiagram2D.AxisX>
        <dxc:BarSideBySideSeries2D  DisplayName="Series" 
                                    DataSource="{Binding}" 
                                    ArgumentDataMember="Date"
                                    ArgumentScaleType="DateTime"
                                    BarWidth="1">
        </dxc:BarSideBySideSeries2D>
    </dxc:XYDiagram2D>
</dxc:ChartControl>