HeatmapRangeStop.Type Property
Gets or sets the type of the color range stop value.
Namespace: DevExpress.Xpf.Charts.Heatmap
Assembly: DevExpress.Xpf.Charts.v24.1.dll
NuGet Package: DevExpress.Wpf.Charts
Declaration
Property Value
Type | Description |
---|---|
HeatmapRangeStopType | The range stop type. |
Available values:
Name | Description |
---|---|
Absolute | The range stop value is measured in absolute units. |
Percentage | The range stop value is specified as a percentage. Values should be defined in the [0, 1] range. |
Remarks
The Type
property allows you to specify whether the range stop’s Value is an absolute or relative value.
Example
This example shows how to use arrays of string and numeric values to create a heatmap.
Follow the steps below to create a heatmap:
Add the HeatmapControl to the project.
Create a HeatmapMatrixAdapter object and assign it to the HeatmapControl.DataAdapter property.
Use the adapter’s XArguments and YArguments properties to populate the heatmap with x- and y-arguments that are displayed along x- and y-axes.
Assign a two-dimensional array of double values to the adapter’s Values property.
Create a HeatmapRangeColorProvider object and assign it to the HeatmapControl.ColorProvider property. The Range Color Provider paints cells based on a value range to which the cell value belongs.
Set the HeatmapControl.Legend property to a HeatmapLegend object to display a legend.
Specify the color provider’s HeatmapPaletteColorProvider.LegendItemPattern property to format legend items.
Use the HeatmapControl.AxisX and HeatmapControl.AxisY properties to customize heatmap axes.
To display cell labels, initialize the HeatmapControl.Label property with a HeatmapLabel object.
<dx:ThemedWindow
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:dx="http://schemas.devexpress.com/winfx/2008/xaml/core"
xmlns:dxh="http://schemas.devexpress.com/winfx/2008/xaml/heatmap"
xmlns:dxc="http://schemas.devexpress.com/winfx/2008/xaml/charts"
xmlns:local="clr-namespace:HeatmapMatrixData"
x:Class="HeatmapMatrixData.MainWindow"
Title="Heatmap" Height="500" Width="800">
<Grid>
<dxh:HeatmapControl>
<dxh:HeatmapControl.DataContext>
<local:MatrixHeatmapViewModel/>
</dxh:HeatmapControl.DataContext>
<dxh:HeatmapControl.DataAdapter>
<dxh:HeatmapMatrixAdapter XArguments="{Binding XArguments}"
YArguments="{Binding YArguments}"
Values="{Binding Values}"/>
</dxh:HeatmapControl.DataAdapter>
<dxh:HeatmapControl.Titles>
<dxc:Title Content="Sales by Categories" HorizontalAlignment="Center"/>
</dxh:HeatmapControl.Titles>
<dxh:HeatmapControl.ColorProvider>
<dxh:HeatmapRangeColorProvider ApproximateColors="True"
LegendItemPattern="${V1}-{V2}K">
<dxh:HeatmapRangeColorProvider.Palette>
<dxc:CustomPalette>
<dxc:CustomPalette.Colors>
<Color>White</Color>
<Color>SkyBlue</Color>
<Color>DarkBlue</Color>
</dxc:CustomPalette.Colors>
</dxc:CustomPalette>
</dxh:HeatmapRangeColorProvider.Palette>
<dxh:HeatmapRangeColorProvider.RangeStops>
<dxh:HeatmapRangeStop Value="0" Type="Percentage"/>
<dxh:HeatmapRangeStop Value="200"/>
<dxh:HeatmapRangeStop Value="400"/>
<dxh:HeatmapRangeStop Value="600"/>
<dxh:HeatmapRangeStop Value="800"/>
<dxh:HeatmapRangeStop Value="1" Type="Percentage"/>
</dxh:HeatmapRangeColorProvider.RangeStops>
</dxh:HeatmapRangeColorProvider>
</dxh:HeatmapControl.ColorProvider>
<dxh:HeatmapControl.Legend>
<dxh:HeatmapLegend Margin="0, 0, 4, 10">
<dxh:HeatmapLegend.Title>
<dxc:LegendTitle Content="Revenue"/>
</dxh:HeatmapLegend.Title>
</dxh:HeatmapLegend>
</dxh:HeatmapControl.Legend>
<dxh:HeatmapControl.AxisX>
<dxh:HeatmapAxis>
<dxh:HeatmapAxis.Title>
<dxc:AxisTitle Content="Region"/>
</dxh:HeatmapAxis.Title>
</dxh:HeatmapAxis>
</dxh:HeatmapControl.AxisX>
<dxh:HeatmapControl.AxisY>
<dxh:HeatmapAxis Reverse="True">
<dxh:HeatmapAxis.Title>
<dxc:AxisTitle Content="Category"/>
</dxh:HeatmapAxis.Title>
</dxh:HeatmapAxis>
</dxh:HeatmapControl.AxisY>
<dxh:HeatmapControl.Label>
<dxh:HeatmapLabel Foreground="Black"
Background="#70ffffff"
Padding="2"/>
</dxh:HeatmapControl.Label>
</dxh:HeatmapControl>
</Grid>
</dx:ThemedWindow>
using DevExpress.Xpf.Core;
namespace HeatmapMatrixData {
public partial class MainWindow : ThemedWindow {
public MainWindow() {
InitializeComponent();
}
}
public class MatrixHeatmapViewModel {
public string[] XArguments { get; set; }
public string[] YArguments { get; set; }
public double[,] Values { get; set; }
public MatrixHeatmapViewModel() {
XArguments = new string[] { "North", "South", "West", "East", "Central" };
YArguments = new string[] { "Accessories", "Bikes", "Clothing", "Components" };
Values = new double[,] {
{ 214.3, 530.1, 630.2, 854.4, 313.4 },
{ 321.3, 514.4, 281.3, 533.4, 541.9 },
{ 604.3, 429.1, 632.6, 438.4, 265.4 },
{ 485.3, 544.7, 740.3, 661.4, 516.6 }
};
}
}
}