AutomaticDateTimeScaleOptions Class

Contains settings for a date-time axis data when its scale mode is automatic.

Assembly: DevExpress.Xpf.Charts.v18.2.dll

Declaration

C#
VB.NET

public class AutomaticDateTimeScaleOptions :
    DateTimeScaleOptionsBase

Public Class AutomaticDateTimeScaleOptions
    Inherits DateTimeScaleOptionsBase

Remarks

An object of the AutomaticDateTimeScaleOptions type is returned by the AxisX2D.DateTimeScaleOptions, AxisX3D.DateTimeScaleOptions, and RadarAxisX2D.DateTimeScaleOptions properties.

In the Automatic scale mode, the Chart control automatically defines the most optimal unit of measure for an axis based on the input data, the current chart control size and the zoom level.

Data for each interval on the X-axis is aggregated using the function specified by the AutomaticDateTimeScaleOptions.AggregateFunction property. Although by default, aggregate function is set to Average, it can be changed to Minimum, Maximum, Sum, etc.

To learn more, see Data Aggregation.

Example

This code snippet shows how to access the automatic date time scale options for the X-axis scale and specify the aggregate function. The automatic options allow the chart control to automatically define the optimal unit of measure for an axis based on the input data, and the zoom level.

XAML
XAML

<Window
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        xmlns:dxc="http://schemas.devexpress.com/winfx/2008/xaml/charts" 
        x:Class="WpfApplication19.MainWindow"
        Title="MainWindow" Height="350" Width="525">
    <Grid>
        <dxc:ChartControl>
            <dxc:XYDiagram2D>
                <dxc:XYDiagram2D.AxisX>
                    <dxc:AxisX2D>
                        <dxc:AxisX2D.DateTimeScaleOptions>
                            <dxc:AutomaticDateTimeScaleOptions  AggregateFunction="Sum"/>
                        </dxc:AxisX2D.DateTimeScaleOptions>
                    </dxc:AxisX2D>
                </dxc:XYDiagram2D.AxisX>
            </dxc:XYDiagram2D>
        </dxc:ChartControl>
    </Grid>
</Window>

<Window
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        xmlns:dxc="http://schemas.devexpress.com/winfx/2008/xaml/charts" 
        x:Class="WpfApplication19.MainWindow"
        Title="MainWindow" Height="350" Width="525">
    <Grid>
        <dxc:ChartControl>
            <dxc:XYDiagram2D>
                <dxc:XYDiagram2D.AxisX>
                    <dxc:AxisX2D>
                        <dxc:AxisX2D.DateTimeScaleOptions>
                            <dxc:AutomaticDateTimeScaleOptions  AggregateFunction="Sum"/>
                        </dxc:AxisX2D.DateTimeScaleOptions>
                    </dxc:AxisX2D>
                </dxc:XYDiagram2D.AxisX>
            </dxc:XYDiagram2D>
        </dxc:ChartControl>
    </Grid>
</Window>

The following code snippet (auto-collected from DevExpress Examples) contains a reference to the AutomaticDateTimeScaleOptions class.

Note

The algorithm used to collect these code examples remains a work in progress. Accordingly, the links and snippets below may produce inaccurate results. If you encounter an issue with code examples below, please use the feedback form on this page to report the issue.

how-to-use-a-custom-date-time-measure-unit-in-automatic-scale-mode-t327792/VB/CustomDateTimeMeasureUnitsCalcuslatorSample/MainWindow.xaml#L15

<dxc:AxisX2D.DateTimeScaleOptions>
    <dxc:AutomaticDateTimeScaleOptions>
        <dxc:AutomaticDateTimeScaleOptions.AutomaticMeasureUnitsCalculator>