如何在使用Google Charts DataTable角色时进行垂直注释？

问题描述

我使用Google Chart Tools DataTable Roles功能来注释LineChart，如下面的链接所述： -

阅读有关注释的文档：

祝你好运！

I am using the Google Chart Tools DataTable Roles feature to annotate LineChart as mentioned in the below link:-https://developers.google.com/chart/interactive/docs/roles

But the annotations are coming Horizontal and not vertical. For example "Started Using Spreadsheets" annotation below is vertical which is what I want but for me its not coming vertical.

I am using the below code to add annotated column:-

addColumn({type:'string', role:'annotation'});

Please help.

解决方案

You are close!Since you have regular annotations ready, just add to your chart options:annotations: {style: 'line'}.

jsFiddle example: http://jsfiddle.net/tVCv9/268/

Read the docs on annotations: https://developers.google.com/chart/interactive/docs/roles?hl=fr#annotationrole

Good luck!

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