This could be the most detailed open-data map of urban gerontology in existence; the Portland project used about half of the number of property records. It’s not a flawless diamond, though. Some of the dates are approximate or inaccurate.
Chris M Whong, BetaNYC’s co-Captian, visualized the 1100+ open datasets made available by New York City. This is a force-directed graph generated with the charting library d3.js. NYC’s open data portal runs on the Socrata platform*, and this visualization was created using the “dataset of datasets” and the Socrata Open Data API (SODA).
Chris writes “Why? The point is to show the scale of the portal, and to illustrate which datasets have user-created views. In the future, it would be great to dynamically size the circles by the popularity of the datasets.”
* Chris is employed by Socrata
** GitHub Link
Most copyright disputes involve some question of whether creators should be compensated for their work, thereby fostering more of it. But this one is unusual in running up against the fundamental right to ownership of the laws you have to obey. The court will have a tricky job in balancing the two.