storing latitude and longitude

Sorry I'm not of much help but...
did you check the data types page?
http://postgresql.mirrors-r-us.net/docs/8.2/interactive/datatype-geometric.html
http://postgresql.mirrors-r-us.net/docs/8.2/interactive/datatype-numeric.html

That mainly depends on how many digits you need to store, if that's not
enough you can always use the NUMERIC data type or create your own...

----------------------------------------

Date: Thu, 10 Jul 2008 10:25:19 -0700
From: markkicks@gmail.com
To: pgsql-general@postgresql.org
Subject: [GENERAL] storing latitude and longitude

hi..
i want to store latitude and longitude in a users table.. what is the
best data type to use for this? i want to be able to find use this
info to find users within a distance..
how do i go about doing this?
thanks

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_________________________________________________________________
Juega y gana, tenemos 3 Xbox a la semana.
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Hi Mark,

Look at Postgis, to do this properly. It adds full OGC spec support for managing spatial/querying spatial data within a Postgres database.

It is an option included with the Windows Postgres installer, but is generally extra packages under Linux.

Cheers,

Brent Wood

mark <markkicks@gmail.com> 07/11/08 5:34 AM >>>

hi..
i want to store latitude and longitude in a users table.. what is the
best data type to use for this? i want to be able to find use this
info to find users within a distance..
how do i go about doing this?
thanks

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Top posting because of a challenged reader ... try <http://postgis.refractions.net/&gt; for packages and documentation.

Greg Williamson
Senior DBA
DigitalGlobe Inc

-----Original Message-----
From: pgsql-general-owner@postgresql.org on behalf of Brent Wood
Sent: Thu 7/10/2008 3:16 PM
To: markkicks@gmail.com; pgsql-general@postgresql.org
Subject: Re: [GENERAL] storing latitude and longitude

Hi Mark,

Look at Postgis, to do this properly. It adds full OGC spec support for managing spatial/querying spatial data within a Postgres database.

It is an option included with the Windows Postgres installer, but is generally extra packages under Linux.

Cheers,

Brent Wood

mark <markkicks@gmail.com> 07/11/08 5:34 AM >>>

hi..
i want to store latitude and longitude in a users table.. what is the
best data type to use for this? i want to be able to find use this
info to find users within a distance..
how do i go about doing this?
thanks

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To make changes to your subscription:
http://www.postgresql.org/mailpref/pgsql-general

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Hello,

Probably the simplest way is to use built-in point type and GiST index
over box(point, point). You will be able to make flat geometrical
calculations (e.g. distance with <-> operator) and retrieve data in
the box given with index support.

Regards,
Ivan