W3C defined the Accessible Rich Internet Applications Suite (WAI-ARIA) to make Web content and Web applications more accessible to the disabled. From ECharts 4.0, echarts4r supports ARIA by generating description for charts automatically.
echarts4robject as returned by
e_chartsor a proxy as returned by
Whether to enable aria helper text.
Any other option to pass, check See Also section.
There should be an aria-label attribute on the chart DOM, which can help the disabled understand the content of charts with the help of certain devices.