On Fri, Mar 19, 2004 at 17:05:11 +0700,
David Garamond <[EMAIL PROTECTED]> wrote:
> Imagine an Orkut-like site. Suppose we have 'person' table of 100k
> people. About 75% of these people fill in their location
> (City/State/Country) information. We also have a 'city' table containing
> list of
"Bas Scheffers" <[EMAIL PROTECTED]> writes:
> Once you have that, the rest is easy. create a column of the type "point"
> and store the grid coordinates in there. The just use the "contains"
> operator (~) in a query.
> (http://www.postgresql.org/docs/7.4/static/functions-geometry.html)
> Example:
I've done this, it is easy. Well, in the UK anyway. We have something
called the national grid (http://www.gps.gov.uk/natgrid/introduction.asp)
But it should be fairly easy to convert long/lat to a simpler grid for
your country.
If you haven't read the intro to thr grid, it is basicaly a 0 point
s
* Nick Barr ([EMAIL PROTECTED]) wrote:
> http://postgis.refractions.net
I second this recommendation. Additionally, consider checking out
GDAL, ogr2ogr and the TIGER dataset provided by the US Census (if you're
in the US anyway). It provides information about basically all the
streets, landmarks
Yannick Warnier wrote:
Imagine an Orkut-like site. Suppose we have 'person' table of 100k
people. About 75% of these people fill in their location
(City/State/Country) information. We also have a 'city' table containing
list of cities with their state & country and each city's
latitude/longitud
Le ven 19/03/2004 à 11:05, David Garamond a écrit :
> Imagine an Orkut-like site. Suppose we have 'person' table of 100k
> people. About 75% of these people fill in their location
> (City/State/Country) information. We also have a 'city' table containing
> list of cities with their state & count
Imagine an Orkut-like site. Suppose we have 'person' table of 100k
people. About 75% of these people fill in their location
(City/State/Country) information. We also have a 'city' table containing
list of cities with their state & country and each city's
latitude/longitude. Assume all people's
