C1.Win.Chart.Extended.Heatmap

Heatmap Class

Represents heatmap series that displays 2D data array using color variations.

Inheritance

Heatmap

Implements

IDisposable

Namespace: C1.Win.Chart.Extended

Assembly: C1.Win.FlexChart.Extended.4.8.dll

Syntax

public class Heatmap : Series, IDisposable

Public Class Heatmap
    Inherits Series
    Implements IDisposable

Remarks

The heatmap series can use DataTable as data source. You can specify the list of column names (comma-separated) in BindingX property. If BindingX is not set the heatmap uses data from all columns with double data type.

Examples

The following code creates heatmap series and add it to the chart.

var hmap = new Heatmap();
hmap.DataSource = new double [,] { { 0, 0.5 }, {0.5, 1 }, { 1, 0.4 }, { 0.5, 1 } };
hmap.ColorScale = new GradientColorScale() { Min = 0, Max = 1, Colors = new List<Color> { Color.White, Color.Red } };
chart.Series.Add(hmap);
chart.AxisX.DataSource = new string[] {"Q1", "Q2", "Q3", "Q4" };
chart.AxisY.DataSource = new string[] { "Region 1", "Region 2" };

Constructors

Name	Description
Heatmap()	Creates an instance of Heatmap class.

Properties

Name	Description
ColorScale	Gets or sets the color scale for the heatmap. The color scale defines trasformation from data value to color.
StartX	Gets or sets the starting data x-value. The default value is -0.5.
StartY	Gets or sets the starting data y-value. The default value is -0.5.
StepX	Gets or sets the data step by x-coordinate. The default value is 1.
StepY	Gets or sets the data step by y-coordinate. The default value is 1.

Methods

Name	Description
GetChartType()	Gets the series chart type.
GetItem(int)	Gets the data item.
GetValues(int)	Gets the data values.
OnRendering(IRenderEngine)	Called before element is rendered.