tag:railsonpostgresql.com,2005:/2009/11/05/intro-to-postgis Rails on PostgreSQL : Intro to PostGIS <h3>If you like Ruby on Rails, you'll love Rails on PostgreSQL!</h3> 2009-11-05T06:55:24+00:00 Typo tag:railsonpostgresql.com,2005:Comment/16 2009-11-05T05:21:42+00:00 2009-11-05T06:55:24+00:00 Simon Comment on Intro to PostGIS by Simon

I think that you should rather use WGS84 (SRID = 4326) as it is widely used by the GPS system. And better: just check what WGS type you have in the incoming data.

Differences between those two you can find here: http://spatialreference.org/ref/epsg/4269/ http://spatialreference.org/ref/epsg/4326/

 tag:railsonpostgresql.com,2005:Comment/17 2009-11-05T18:28:46+00:00 2009-11-05T18:35:14+00:00 Doug Cole Comment on Intro to PostGIS by Doug Cole

Thanks for the pointer Simon, I’ve updated the post. We standardized on NAD83 as that was what most of the datasets we were using came in, but WGS84 looks like a slightly better option.