OpenStreetMap
For a while the OpenStreetMap wimbledon tournament developed into a tantalising doubles match. The rankings showed Jaume Figueras storming into the lead. With his relation mapping powerful topspin who could be surprised? But from nowhere he was joined by jgallegocuesta forming a powerful Spanish team. Facing them across the court my friend rjhale1971 with his powerfull Chattanooga backhand volley, was suddenly joined by Aude to form a U.S. team. They haven't managed to get back into this match yet, but with 6 hours remaining there's still everthing to play for.
But just when we thought England's tennis hopes were in tatters Gregory Williams put in a string of aces! We thought we were in for a Spanish vs U.S. final, but things just got mixed up again!
Nobody can be ruled out of this tournament just yet. In fact all the OpenStreetMap tennis court mappers are champions! Have you got your name on the edits list yet?
Discussion
Comment from Tom Chance on 6 July 2011 at 12:37
Harry, I love this... can you do it for some other projects of the week? :)
(used judiciously so as to keep it exciting rather than a humdrum regular thing)
Comment from Harry Wood on 6 July 2011 at 13:48
yes. Definitely hoping to reuse the edit tracking code, and tabular display code. Easy enough to switch it to a different tag. It's also easy enough to leave the whole system running indefinitely, but I reckon it's more fun to shut it down at the end of the week (in a 3 hours time)
...or did you mean my exciting tennis commentary? :-)
Comment from Gregory Williams on 6 July 2011 at 14:22
It's been fun looking for tennis courts. It's actually pretty easy -- I've just focussed my search on pretty affluent areas of the countryside where there are likely to be a number of private tennis courts.
The great thing is that my searching has also uncovered quite a number of soccer pitches and bowls greens that I've mapped too.
Comment from Harry Wood on 6 July 2011 at 14:26
I've been seeking out tennis courts in the U.S. (using bing) In the process I've been amazed that every school in the U.S. has four or five baseball pitches. I hadn't realised how completely baseball obsessed they are. Also surprised that most large schools have a full size running track. All these things are very distinctive and easy to add to the map
Comment from Tom Chance on 6 July 2011 at 16:04
Well I look forward to your commentary when Gregory publishes his toilet map and we make that a project of the week!
Is it possible to limit it with a bounding box? It might be a fun way to get people to finally tag speed limits in London, for example.
Comment from Harry Wood on 6 July 2011 at 18:01
My ruby script chews on every changeset as it comes in, so it can filter by tags or operation type, or user, or bounding box (kind of... although it will only see coordinates for nodes unless it has a way->node lookup) But with any kind of filter it's not very efficient when you consider the proportion which edits matching the filter. I guess for bbox filter it would be smarter to try to hook it into OWL instead
Comment from Mappo on 7 July 2011 at 09:46
Reminded me of this, a computer vision project that automatically finds tennis courts in satellite images:
http://ahathereitis.blogspot.com/2009/12/how-it-works.html