Free Information Visualization Tools

In class this past week, someone asked about building one's own visualizations. Here's a link to a post from FlowingData about a couple of free web-based tools to try out: http://bit.ly/9zOJLN

There are some tutorials on the FlowingData site (do a site search) that walk you through the process of creating some various visualizations, but most of them require knowledge of Python and basic scripting skills.

Cheers.