Improving OpenStreetMap with the latest TIGER data
Much of the United States in OpenStreetMap is based on US Census Bureau TIGER
2006 data. While this
data has been edited and improved in OpenStreetMap over the past several years,
TIGER is also dramatically more accurate and complete now in many places
than it was in 2006.
We are starting to incorporate these improvements to TIGER into OpenStreetMap by
designing ways to identify where TIGER has been changed and
OpenStreetMap hasn’t and exposing those areas for editing in
OpenStreetMap’s iD editor.
This is a screenshot showing a development version of the iD map editor with a layer of
TIGER 2012 changes that don’t also appear in OpenStreetMap (yellow) and
obsolete TIGER data that is still in OpenStreetMap (blue). Mappers
can go in and focus on these areas, improving data in OpenStreetMap
accordingly. The orange layer is tweet locations that
we are using to guide priority areas to map. This layer is similar to our work with
Gnip, but sourced
from the public Twitter gardenhose instead. The tweets can’t be traced into
OpenStreetMap, but they are a good indicator of the most frequently visited
We’re busy right now making the map update dynamically from OpenStreetMap.
Stay tuned for updates.