On 12/31/2013 12:45 PM, peterlen wrote:
PostgreSQL has a geometric data type of "point". The format is listed as (x, y) but I am not sure if the X is to represent latitude or longitude. I have seen different systems that us X for either. Typically, coordinates should be read as lat/long but I have seen the opposite as well. An example in the help docs listed a point coordinate as x= longitude and y=latitude. Can someone clarify what the postgres standard is? What this will come down to is how built-in geospatial functions will interpret the point value.
point is just x,y, it doesn't understand the spherical lat/long math (unless you install PostGIS and use its Geometry types which are fully aware of spherical coords), that said, Latitude is generally used as X (left/right, aka east/west), while Longitude is Y (up/down aka north/south)
-- john r pierce 37N 122W somewhere on the middle of the left coast -- Sent via pgsql-general mailing list (pgsql-general@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-general
