Rails

… announcing yet another take on getting PostGIS working with Ruby on Rails. Our goal (well, one of them) is to make it easy to arrange for web-based presentation of geographic data, with mouse-sensitive polygons, line-strings, and the like. The code is still quite new, but it’s to the point that other people may find it useful. So, without further ado, the URL for the code http://ivygis.justec.co.in/
and a demo: http://ivygis.mgxkernel.com:3000/canada
The demo requires Firefox 1.5 or IE6. It’s a tiled map, which you’ve seen before; the mouse sensitivity and highlighting of the parks polygons, and railroads, are (we hope ;-), a bit more unusual. The data for the mouse-sensitive objects is being pulled live out of PostGIS, and processed for display as SVG or VML, whichever the browser supports — just a simplify() for now, but more complicated transforms and queries would be easy to arrange…

[from Robert Thau's email today]