The number of marks is reduced from over 5000 to about 20. Key data points are still included, but they are now easier for users to read and understand. This example shows the same view with the data aggregated at a higher level. It is too difficult to use for users who need screen readers. The view is showing over 5000 marks and does not include enough text to indicate what the different marks represent. This much detail makes the view harder to understand. Users can also access the View Data page (enabled by default) to review the underlying data for the marks or can download the data from that page to an accessible application to view it that way.Įxample: This example shows two different bar chart views to illustrate the difference between a detailed and aggregated view. Also, showing more than 1000 marks in the view can cause the view to be rendered by the server instead of the browser and server-rendered views are not yet supported for WCAG conformance. Use the following guidelines to help you communicate everything that you want to without overwhelming your users with an over-packed view.Īggregate your data whenever possible to help reduce the number of marks you are showing. However, dense views can be difficult to understand or navigate using a screen reader or keyboard. You might have a lot of information that you want to communicate with your view. For example, using clearly distinguishable names and labels for different elements shown in your view.įollow the best practices described in this article and incorporate the steps described in Author Views for Accessibility, to build views that are accessible to all of your users when published on Tableau Server or Tableau Cloud. Understandable -The information presented in the view must be understandable to your users. Operable - The user interface components and navigation must be accessible to users from the different devices or methods that they use to interact with the view.Consider including text alternatives and alternate ways to present the content. Perceivable - Information and user interface components must be presented to users in a way that they can perceive. Ensure that content shared from Tableau Cloud or Tableau Server follows the steps in Author Views for Accessibility and conforms to the following WCAG 2.0 AA principles: Tableau supports several controls to enable you to build a view that complies with US Section 508 requirements when consuming a view in Tableau Cloud or Tableau Server that meets the Web Content Accessibility guidelines (WCAG 2.0 AA). You created a great view, and you want to make sure that all of your users can see and understand the data that you've put together- but some users have visual or physical impairments.
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