thinkwhere

Here’s a map of the registrants for BarCamp Leeds 2007, from the registration data given to me by Imran. Nice to see a wide spread of people from around the place, and, as you can see, they are mostly up North! It uses  the very good Openlayers JavaScript mapping api, and the default underlying mapping is of OpenStreetMap  but also Yahoo, and Google Hybrid map can be seen (thanks Chris for the OSM tiles!).

Looking forward to barcamping, going to do something geo, whether opensource geostack, openstreetmap, or desktop GIS stuff, who knows! Any suggestions?

(Got this up on geothings.net on the day I’ve registered it)

Chris has made a transparent openstreetmap layer, utilizing tilecache and mapnik configured for transparencies

with a neat overlay opacity control too.

example with landsat

example with yahoo images

We joked about it at State of the Map (before the iphone was released) and now Mikel and Andrew hacked the iphone to display openstreetmap tiles! Cool! Turns out, the phone helpfully caches map tiles in a sqllite database on the phone.