Range Area Chart in TypeScript Charts
18 Nov 20182 minutes to read
Range Area
To render a range area series in your chart, you need to follow a few steps to configure it correctly. Here’s a concise guide on how to do this:
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Set the series type: Define the series
typeasRangeAreain your chart configuration. This indicates that the data should be represented as a range area chart, which is ideal for visualizing a range of values for each data point. This type of chart is particularly useful for displaying data that has a range between a minimum and maximum value, such as temperature ranges, stock price ranges, or any other type of data that varies within a specific interval.
Binding data with series
You can bind data to the chart using the dataSource property within the series configuration. This allows you to connect a JSON dataset or remote data to your chart. To display the data correctly, map the fields from the data to the chart series xName, high, and low properties.
Series customization
The following properties can be used to customize the range area series.
Fill
The fill property determines the color applied to the series.
The fill property can be used to apply a gradient color to the range area series. By configuring this property with gradient values, you can create a visually appealing effect in which the color transitions smoothly from one shade to another.
Opacity
The opacity property controls the transparency of the fill and affects how the series blends with background or overlapping series.
Border
Use the border property to configure the border width, color, and dasharray of the range area series.
Empty points
Data points with null or undefined values are considered empty. Empty data points are ignored and not plotted on the chart.
Mode
Use the mode property to control handling of empty points. Available modes: Gap, Drop, Zero, Average. The default mode is Gap.
Fill
Use the fill property to set the fill color for empty points.
Border
Use the border property to customize the border width and color for empty points.
Events
Series render
The seriesRender event enables modification of series properties (for example, data, fill, or name) immediately before rendering. Use this event to adjust series appearance or to dynamically swap data sources.
Point render
The pointRender event provides a hook to customize each data point (for example, marker shape, border, or fill) before it is drawn. Use this to apply per-point styling rules or conditional formatting.