I am looking for a 2010 Census Tiger Shape file that hugs the coastline and doesn't include the ocean in county boundaries. I have a pre 2010 file that did this and I can't seem to find a 2010 version that follows the same pattern.
For Reference, I have been looking here: http://www2.census.gov/geo/tiger/
Below are visuals of the difference
Pre 2010 - Hugs land 
2010 Includes Ocean 
Answer
UPDATE The new files are now available and known as "Cartographic Boundary Files". More detail on the other types here http://www.census.gov/geo/maps-data/data/tiger.html The County file discussed above is available here: http://www.census.gov/geo/maps-data/data/cbf/cbf_counties.html
The official file is not currently available as of 5-12-2011, but should be sometime this summer.
My team might create our own version for use in the interim. If we do, I will post back a download link here.
We put in an official query to the geo.geography at census.gov team and got an (impressively) fast answer. Below is their response.
We do not currently have shapefiles that hug the coastline for 2010. We are in the process of creating our cartographic boundary files, which are more generalized and are clipped to the shoreline, but they are not ready yet. We hope to release these shapefiles this summer.
In the mean time, you could use the hydrography shapefiles to clip county boundaries to the shoreline. The shapefiles are available for download here: http://www.census.gov/geo/www/tiger/tgrshp2010/tgrshp2010.html. You could download the line hydrography file and use the lines that have an MTFCC code of P0002 for perennial shoreline. You would have to do this by county though, so it may be intensive work.
No comments:
Post a Comment