RangeBarSeries.PointColorizer Property

Gets or sets a colorizer that specifies how to color-code bars. This is a bindable property.

Namespace: DevExpress.Maui.Charts

Assembly: DevExpress.Maui.Charts.dll

NuGet Package: DevExpress.Maui.Charts

Declaration

public IRangePointColorizer PointColorizer { get; set; }

Property Value

Type	Description
IRangePointColorizer	A colorizer object.

Remarks

A point colorizer allows you to specify one or more conditions based on which a chart applies colors to series points (bars).

You can use a predefined colorizer or implement a custom colorizer for series points.

Use a Predefined Colorizer

The ChartView ships with point and value range colorizers that use predefined algorithms to select point colors.

Point Colorizer

Assign a ColorEachPointColorizer object to the PointColorizer property of the series to access colors from the default or custom palette.

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Value Range Colorizer

You can color series points based on their Y-axis values.

1. Assign a RangeValueBandPointColorizer object to the PointColorizer property of the series.
2. Populate the colorizer’s ColorStops collection with ColorStop objects. Each ColorStop object defines a value range (a pair of Y-axis values) and color. If a Y-axis value falls within the range, the point is painted with this color. Use the ValueLevel property to specify which of two point values (Low or High) should be evaluated.

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Implement a Custom Colorizer

Point Colorizer

The ChartView can color points of a series according to a custom algorithm based on point arguments/values and values of the chart’s bound data source.

Create a class that implements the IRangeCustomPointColorizer or IIndexBasedCustomPointColorizer interface and assign this class instance to the PointColorizer property of the series.

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Value Range Colorizer

A predefined value range colorizer colors points according to their Y-axis values. If you require a series point color to indicate a value of the specified data source field, implement a custom value range colorizer. To do this:

1. Assign a CustomValueBandPointColorizer object to the PointColorizer property of the series.
2. Create a class that implements the ICustomColorizerNumericValueProvider interface and its GetValueForColorizer method that returns a value from the data source based on which a series point should be colored. Assign this class value to the colorizer’s ValueProvider property.
3. Populate the colorizer’s ColorStops collection with ColorStop objects. Each ColorStop object defines a value range and color. If a value that the GetValueForColorizer method returns for a series point falls within the range, the point is painted with this color.

Refer to the following topic for more information: Charts for .NET MAUI. Series Point Colorizers.