Accessible charts and graphs

In the current information age, data visualizations need accessibility just as any other content type. Whilst we rave over supplying images with alternative text and providing closed captions or audiodescriptions for multimedia, barely anyone seems to consider the accessibility of the ever growing mound of data visualizations in our everyday news feeds. Charts and graphs are a huge accessibility challenge, but obiding by a few simple rules can greatly improve the user experience of many special needs groups - especially the visually impaired and users with cognitive deficits - enhancing the experience for all of us at the same time.