Polar Chart in TypeScript Charts
18 Nov 20184 minutes to read
Polar Chart
To render a polar 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
typeasPolarin your chart configuration. This indicates that the data should be represented as a polar chart, which is ideal for plotting data points on a circular graph.
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 and yName properties.
Draw types
Use the drawType property to change the series plotting type in a Polar chart to line, column, area, range column, spline, scatter, stacking area, spline area, or stacking column. The default value of drawType is Line.
Line
To render a line draw type, you need to follow a few steps to configure it correctly.
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Set the series type: Define the series
drawTypeasLinein your chart configuration. This indicates that the data should be represented as a polar line chart, with lines connecting each data point.
Spline
To render a spline draw type, you need to follow a few steps to configure it correctly.
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Set the series type: Define the series
drawTypeasSplinein your chart configuration. This indicates that the data should be represented as a polar spline chart, with smooth, curved lines connecting each data point.
Area
To render an area draw type, you need to follow a few steps to configure it correctly.
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Set the series type: Define the series
drawTypeasAreain your chart configuration. This indicates that the data should be represented as a polar area chart, with filled areas below the lines connecting each data point.
Stacked area
To render a stacked area draw type, you need to follow a few steps to configure it correctly.
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Set the series type: Define the series
drawTypeasStackingAreain your chart configuration. This indicates that the data should be represented as a polar stacked area chart, with areas stacked on top of each other, displaying the cumulative value of multiple series.
Column
To render a column draw type, you need to follow a few steps to configure it correctly.
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Set the series type: Define the series
drawTypeasColumnin your chart configuration. This indicates that the data should be represented as a polar column chart, allowing for the comparison of values across categories.
Stacked column
To render a stacked column draw type, you need to follow a few steps to configure it correctly.
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Set the series type: Define the series
drawTypeasStackingColumnin your chart configuration. This indicates that the data should be represented as a polar stacked column chart, with each column consisting of multiple segments stacked on top of each other.
Range column
To render a range column draw type, you need to follow a few steps to configure it correctly.
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Set the series type: Define the series
drawTypeasRangeColumnin your chart configuration. This indicates that the data should be represented as a polar range column chart, where each column spans a range of values.
Scatter
To render a scatter draw type, you need to follow a few steps to configure it correctly.
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Set the series type: Define the series
drawTypeasScatterin your chart configuration. This indicates that the data should be represented as a polar scatter chart.
Spline area
To render an spline area draw type, you need to follow a few steps to configure it correctly.
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Set the series type: Define the series
drawTypeasSplineAreain your chart configuration. This indicates that the data should be represented as a polar spline area chart, where the series is drawn with smooth, curved lines connecting each data point, and the area beneath the line is filled with color.
Series customization
Start angle
You can customize the start angle of the polar series using startAngle property. By default, startAngle is 0 degree.
Radius
You can customize the radius of the polar series using coefficient property. By default, coefficient is 100.
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.