Accesibildad de gráficos complejos

En Charts & Accessibility  se ofrecen algunos consejos, con ejemplos, para crear gráficos accesibles:

1. If the data in a chart, graph or map is crucial to the content of a Web page, then you must provide a text description of the image. In some cases, a numeric table replicating the chart data could provide additional accessibility. WCAG 2.0 Guideline 1.1.1—"All non-text content that is presented to the user has a text alternative that serves the equivalent purpose…"
2. Supplement color-coding of charts with texture, differences in line style, text in graphs or different shades of color to improve accessibility for colorblind users. Charts should be readable in black and white. NOTE: The default settings of the Chart Wizard in Excel are not color accessible. Use the formatting tools to change line styles and colors. WCAG 2.0 Guideline 1.4.1—"Color is not used as the only visual means of conveying information, indicating an action, prompting a response, or distinguishing a visual element."