20.2 (EAP/Beta)
20.1
19.2
19.1
18.2
18.1
17.2

# FunnelSeries2D.HeightToWidthRatioAuto Property

Gets or sets a value which indicates whether the height-to-width ratio of a Funnel Series series should be auto-calculated.

Namespace: DevExpress.Xpf.Charts

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

## Declaration

``public bool HeightToWidthRatioAuto { get; set; }``
``Public Property HeightToWidthRatioAuto As Boolean``

## Property Value

Type Description
Boolean

true, if the height-to-width ratio should be auto-calculated; otherwise, false.

## Remarks

Use the HeightToWidthRatioAuto property, to toggle between automatic and manual height-to-width ratio definition for Funnel Series series.

If the HeightToWidthRatioAuto property is set to false, the FunnelSeries2D.HeightToWidthRatio property becomes available, which allows you to manually define the desired ratio.

The following images demonstrate the HeightToWidthRatioAuto property in action.

HeightToWidthRatioAuto = true

HeightToWidthRatioAuto = false

HeightToWidthRatio = 2

## Examples

This example demonstrates how to create a 2D Funnel chart.

1. Create a ChartControl and set its ChartControl.Diagram property to a SimpleDiagram2D object.

##### NOTE

Note that the ChartControl.Diagram is a content property. You can declare a diagram in XAML directly after a chart control's declaration without wrapping it in opening and closing ChartControl.Diagram tags.

2. Add a FunnelSeries2D object to the Diagram.Series collection.

##### NOTE

Note that the Diagram.Series is a content property. You can declare series in XAML directly after a diagram's declaration without wrapping them in opening and closing Diagram.Series tags.

Use the following properties to bind the series to data:

3. Set the Series.LegendTextPattern property to "{}{A}: {V}" to show a point argument with a corresponding value for each point in the legend.

4. Enable the Series.LabelsVisibility property to display the series labels. Set the SeriesLabel.TextPattern property to "{}{VP:##.##%}" to show a point's percentage value in each series label.

5. To change the funnel height's ratio to its width, disable the FunnelSeries2D.HeightToWidthRatioAuto property and define FunnelSeries2D.HeightToWidthRatio.

You can optionally add a chart title and change the legend's position.

##### NOTE

A complete sample project is available at https://github.com/DevExpress-Examples/how-to-create-a-2d-funnel-chart-t102358.

``````<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"
xmlns:local="clr-namespace:FunnelChart"
x:Class="FunnelChart.MainWindow"
Title="MainWindow" Height="650" Width="900">
<Window.DataContext>
<local:ChartViewModel/>
</Window.DataContext>
<Grid>
<dxc:ChartControl>
<dxc:SimpleDiagram2D>
<dxc:FunnelSeries2D DataSource="{Binding Data}"
ArgumentDataMember="Argument"
ValueDataMember="Value"
LegendTextPattern="{}{A}: {V}"
HeightToWidthRatioAuto="False"
HeightToWidthRatio="0.9"
PointDistance="2"
LabelsVisibility="True">
<dxc:FunnelSeries2D.Label>
<dxc:SeriesLabel TextPattern="{}{VP:##.##%}"
dxc:FunnelSeries2D.LabelPosition="Center"/>
</dxc:FunnelSeries2D.Label>
</dxc:FunnelSeries2D>
</dxc:SimpleDiagram2D>
<dxc:ChartControl.Titles>
<dxc:Title Content="Website Visitor Trend"
Dock="Top"
HorizontalAlignment="Center"/>
</dxc:ChartControl.Titles>
<dxc:ChartControl.Legends>
<dxc:Legend HorizontalPosition="RightOutside"
VerticalPosition="Top"/>
</dxc:ChartControl.Legends>
</dxc:ChartControl>
</Grid>
</Window>
``````