Google Maps had The Atlantic over for a chat about how they work up their 'deep map' from various sources. It's interesting to read about how Google invests incredible amounts of money and manpower to try and do the best job possible of capturing ground truth without people on the ground. The article contains some … Continue reading Google Maps and OpenStreetMap Data Views – Find The 10 Differences
Although the OpenStreetMap data license change from CC-BY-SA to ODbL is not formally done, the redaction bot has done its thing. It was activated in mid-July after rigorous testing and months of development to go over the entire planet, square degree by square degree, and delete any tainted node, way and relation or revert it … Continue reading Post-Redaction Repair Tools: Maps and the Remap-A-Tron
There are some pretty awesome tools out there to help with the remapping effort after the redaction bot made its sweep across the OpenStreetMap database. (Does this sound like Latin to you? Read up on the license change and the redaction process here.) Geofabrik's OSM Inspektor shows all the objects affected by the redaction. It … Continue reading Life After Redaction: Detecting Remapped Ways
Lazy people go straight here and here. But you're not that person, are you? The Wikimania conference is around the corner, and it's close to home this year - in Washington, DC. DC already has a lot of resident geo geeks and mappers. With all the open, collaborative knowledge minded people in town, there is … Continue reading A Look At Stale OpenStreetMap Data
For the impatient: do you want to get to work solving highway trouble in OpenStreetMap right away? Download the Trouble File here! Making pretty and useful maps with freely available OpenStreetMap data has never been so easy and so much fun to do. The website Switch2OSM is an excellent starting point, and with great tools … Continue reading Detecting Highway Trouble in OpenStreetMap
I had what I thought was a pretty straightforward use case for OpenStreetMap data: I want all bridges in the US that are mapped in OpenStreetMap in a PostGIS database. There are about 125,000 of them - for now loosely defined as 'ways that have the 'bridge' tag'. So on the scale of OpenStreetMap data … Continue reading A self-updating OpenStreetMap database of US bridges – a step-by-step guide.
Looks can be deceiving - we all know that. Did you know it also applies to maps? To OpenStreetMap? Let me give you an example. Head over to osm.org and zoom in to an area outside the major metros in the United States. What you're likely to see is an OK looking map. It may … Continue reading The State Of The OpenStreetMap Road Network In The US