How to display data labels vertically and support Chinese

I see you created a related question here which I have answered. This shows how to rotate a TextAnnotation 90 degrees by creating a CustomAnnotation

The NativeText can be used to support chinese characters and rotation, but requires a custom font. Here’s our article on Font Loading with native text.

What I suggest you do – as its much simpler is use TextAnnotation solution presented in this post.

If you need an example of how to get the Native Text API working with chinese characters, let me know by commenting on this post

Best regards
Andrew