118 reputation
3
bio website
location Kiel, Germany
age 23
visits member for 3 years, 1 month
seen Oct 31 '11 at 13:20

Creator of the c2dm-rails gem, a gem to easily send push notifications via the google cloud to device messaging service.


Sep
24
awarded  Autobiographer
Oct
31
awarded  Scholar
Oct
31
accepted Project twitter geo data into wgs 84 map
Aug
31
comment Project twitter geo data into wgs 84 map
mkennedy: make that an answer and I'll accept it. It puts me way nearer to the solution, even though there is still an offset (probably because the world map isn't a full 90°, but 86° lat) current version (1 mil tweets, about 24h): dl.dropbox.com/u/14747311/overlay.png
Aug
31
comment Project twitter geo data into wgs 84 map
That's really fine and all for them but doesn't help me with my problem, considering my problem isn't the data or even twitter (the data could be anything, it just happends to be geodata from twitter as it is readily available), my problem is the projection.
Aug
31
comment Project twitter geo data into wgs 84 map
Yep, I'm aware of that - the equations above are a linear mapping into the cartesian coordinates of image, so that's not really the problem. I don't necessarily need to do the world map via mapnik, neither does it have to be exact, just the shape of the continents has to be vaguely correct. So if you could point me to some sort of dataset that I could render myself with the same technique I use to render the twitter data, I would be helped as well.
Aug
31
comment Project twitter geo data into wgs 84 map
How am I'm supposed to render lat/long to a cartesian system without a projection? Also, this is just the first stage, I want to render the information differently, not just single lat/long points, and that is better done in the cartesian system :-/
Aug
30
awarded  Student
Aug
30
comment Project twitter geo data into wgs 84 map
The world map is rendered via mapnik, the twitter data via the detailed equations (using ruby and rmagick). I'm really new to the topic and open to suggestions.
Aug
30
asked Project twitter geo data into wgs 84 map