Ian gave this talk at Tri

1. Eric Gundersen / Ian Ward
MapBox / Development Seed

2. Map Showcase...

3. Looks complicated, no?...

4. ...The design – not so much.
...The data – more so.

7. Demo...

17. Data formats in TileMill:
* PostGIS
* GeoTIFF
* GeoJSON
* ESRI shapefile
* KML

18. Projections
Fuente de grafico: http://www.kartografie.nl/geometrics/map%20projections/body.htm

20. proj4 string
+proj=longlat +ellps=WGS84 +datum=WGS84 +no_defs
http://trac.osgeo.org/proj/

21. > web mercator

22. Now, how to publish on the Internet?

23. Tilestream

24. Got data?

25. MapBox Geodata Library
http://tilemill.com/pages/manual.html

28. Use OSM data in TileMill

29. shapefiles from CloudMade

30. Or, convert to PostGIS
* imposm.org
* osm2pgsql

34. DC Public Transit geodata
http://dcatlas.dcgis.dc.gov/catalog/

38. Thank you.