The accessible SVG line graphs post explains how to use ARIA table semantics to make that form of data visualisation accessible to screen readers. This article uses the same ARIA based approach to make a screen reader accessible SVG flowchart.
The 13th in a series of posts that bring together the two sides of my blog: Food and technology. I’ve asked the great and the good from the web standards community to share their favourite recipes. This mouth-watering chicken dish is from Eric Meyer.
People often presume I would jump at the chance to be able to see again. The fact of the matter is that I really don’t know whether I would or not, because there is more to it than you might think.
The Accessibility Object Model (AOM) is an experimental JavaScript API that enables developers to modify the browser accessibility tree. The AOM has four phases, and support for phase one recently landed in Chrome Canary behind the flag.
SVG is often used for data visualisation, but because SVG lacks the semantics to express structures like bar charts, line graphs, and scatter plots, the content is difficult for screen reader users to interpret. The solution is to use the technique for creating accessible SVG tables as your starting point.
SVG has no native semantics for representing structures like tables, but ARIA1.1 introduces a number of roles that can be used to polyfill the necessary semantic information.