github:https://github.com/antvis/g2 guide: https://github.com/antvis/g2/wiki/How-to-create-a--chart api: https://github.com/antvis/g2/wiki/API
github:https://github.com/antvis/g2 guide: https://github.com/antvis/g2/wiki/How-to-create-a--chart api: https://github.com/antvis/g2/wiki/API