if the pie chart area's size is auto,when adjust the area's vertical size,the pie's radius will change in order to fit the label display,it is ok,but when adjust the area's horizontal size,the pie's radius don't change,looking the attachment file,the label move above the pie.
Hello wu yang, Note that the pie chart won't take into account the label positions when rendering the pie. It is rendered independently. Also, the pie's size will change proportionally based on the available space. However, I am not sure what is the issue on your side. May I ask you to provide a video showing the reported problem? Additionally, you can open a new support ticket from your telerik.com account and send a project there. Regards, Martin Ivanov Technical Support Engineer
and when refresh or reload the data,the pie chart can adjust the radius ,and show the label correctly.