Ian Johnson is the author of Tributary - an open source live-coding environment designed for prototyping data visualizations with D3. He also co-organizes the SF Bay Area d3 Meetup and makes educational D3 videos.
Bay Area D3 and Tributary
Ian continues his coding of the brush generator. His next task is to show when the posts happen on top of the brush. He'll add this additional context by drawing graphics on the brush.