Thanks Regina, that looks like a good option. Distance from Seattle to Miami is 2717 miles under SRID 2163 versus 2730 miles under the custom projection. Definitely close enough for what I'm doing.
On Fri, 2008-10-17 at 15:47 -0400, Obe, Regina wrote: > I usually us US National Atlas Equal Area - Meters (SRID 2163) > > Though maybe I should try the below and see how my numbers match up. > > -----Original Message----- > From: [EMAIL PROTECTED] > [mailto:[EMAIL PROTECTED] On Behalf Of > David Jantzen > Sent: Friday, October 17, 2008 3:35 PM > To: postgis > Subject: [postgis-users] Standard projection for continental US? > > Hey All, > > I'm wondering if there's an official or standard projection that covers > the continental US? When I first joined the list, Paul kindly provided > this: > > INSERT INTO SPATIAL_REF_SYS VALUES (1000000,'ME',1000000,'','+proj=aea > +lat_0=23 +lon_0=-96 +lat_1=29.5 +lat_2=45.5 +datum=NAD83 > +ellps=GRS80'); > > It seems to work accurately enough, I'm just curious if there's a > standard definition like those in spatial_ref_sys.sql. > > Thanks, > David > > _______________________________________________ > postgis-users mailing list > [email protected] > http://postgis.refractions.net/mailman/listinfo/postgis-users > ----------------------------------------- > The substance of this message, including any attachments, may be > confidential, legally privileged and/or exempt from disclosure > pursuant to Massachusetts law. It is intended > solely for the addressee. If you received this in error, please > contact the sender and delete the material from any computer. > _______________________________________________ > postgis-users mailing list > [email protected] > http://postgis.refractions.net/mailman/listinfo/postgis-users _______________________________________________ postgis-users mailing list [email protected] http://postgis.refractions.net/mailman/listinfo/postgis-users
