Show percentage on Chart

chart

asked 2023-02-20 17:58:15 +0800

nome
7 ● 2

Hi guys, I using Pie Chart and want to display percentage on it. I read document but can can not find to way to solve it. One more thing, I want to remove border from the chart box too. Please help.

Ref Doc. ZKComponentReference/DiagramsandReports/Chart#Pie_Chart

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answered 2023-03-01 16:37:45 +0800

hawk
3135 ● 1 ● 5
http://hawkphoenix.blogsp... ZK Team

updated 2023-03-01 16:38:14 +0800

There is no buillt-in API. But you can implement your custom JfreeChartEngine to achieve it. See examples:

https://github.com/zkoss/zkbooks/blob/master/componentreference/src/main/java/org/zkoss/reference/component/diagrams/MyJfreeChartEngine.java
https://github.com/zkoss/zkbooks/blob/master/componentreference/src/main/webapp/diagrams/chart-gantt.zul

You need to find the corresponding jfreechart api to change the label of a pie chart, it could be:

https://www.jfree.org/jfreechart/javadoc/org/jfree/chart/labels/PieSectionLabelGenerator.html
https://www.jfree.org/jfreechart/javadoc/org/jfree/chart/labels/PieToolTipGenerator.html

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