Hello
I'm @tmcw
@Tom MacWright

MAPS

coding

MAKING STUFF
github.com/tmcw /mapbox /developmentseed
BSD
(business model: hosting, community, consulting)
The State of Open Source GIS in 2011
art wins
Mapnik wins
MapBox, Stamen, Vizzuality, MapQuest

ESRI is irrelevant
data is still awful

OSM is the one true street map
Slippy Maps!
JS wins
everything else in browsers loses
Modest Maps, Polymaps, d3, Leaflet
or OpenLayers
"Vectors in Browser"
nope*
*in the real world
(not until WebGL adoption)
(and an open-source binary GeoJSON successor)
until then: Leaflet & Modest Maps
Data!
PostGIS: complex, fast, big (OSM-scale!)
SQLite: simple, big, local
CartoDB: simple, remote

most people still use shapefiles

The Future of Open Source GIS

no more projections
unless you want to care

Speed
fast data × fast rendering = iteration
fast data × fast rendering = abstraction

Consensus
lat/lon, tiling standards, data, clients, licenses
Dear academics:
More laptops Less posterboard
EPSG:900913 EPSG:3587 EPSG:3785 EPSG:102113 EPSG:102100