799677446 commented on issue #9128: 键盘缩放事件 URL: https://github.com/apache/incubator-echarts/issues/9128#issuecomment-424642797  你好，现在的需求是以鼠标移动到的指标为中心点，通过方向键以这个中心点放大缩小，主要是这点不知如何处理，想请教下有什么好方法解决
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