There’s plenty of data visualization plugins for WordPress out there, most of which are pretty robust and offer full featured data management tools. I wanted to create a plugin with a different approach: manage your data using your favorite command line tool or application, and add it to your WordPress blog with minimum options to tweak.
While the interface is designed to be minimalist, you still get plenty of options for visualization styles, you can add prefixes before the values, sort your data, or limit the number of data points.
Accessibility is an important part of this project, from proper descriptions to keyboard navigation support and the use of accessible colors (via colorbrewer2.org).
You can see a few examples articles using the plugin here.