"In case you are lost with that distinction, geometric data types are based
on a flat 2D graph to locate a point, line, rectangle, polygon etc"
Yes - this is what I am interested in with the eventual potential of 3D.
Bob
----- Original Message -----
From: "Shane Ambler" <pgsql@xxxxxxxxxx>
To: "Bob Pawley" <rjpawley@xxxxxxx>
Cc: "Obe, Regina" <robe.dnd@xxxxxxxxxxxxxxxx>; "PostgreSQL"
<pgsql-general@xxxxxxxxxxxxxx>
Sent: Wednesday, April 16, 2008 2:09 AM
Subject: Re: [GENERAL] Not Geography
Bob Pawley wrote:
[GENERAL] Not GeographyI have PostgreSQL, c/w the geometry
attachment, installed on Win XP. I need to get started using it. I am
best able to do that by example, however a simple (geometry for
dummies) description or a tool would also help.
Are you wanting to use the geometric data types that are included in
postgresql or full GIS types that are added by postgis?
If you are working with basic geometry instead of geographic data then
this may be somewhat simpler for you.
In case you are lost with that distinction, geometric data types are based
on a flat 2D graph to locate a point, line, rectangle, polygon etc
GIS data gets a bit more complex as it accounts for distortions from the
graph being stretched around the roughly circular earth. There are also
several different ways to calculate these distortions and postgis will
translate between them. As well as layering different data and help
deciding what data is viewable at what zoom levels etc.
postgis is normally only used for geographic data but can be more widely
applied. postgis can also handle 3D data if that is what you are
interested in.
I am on the Postgis list but everyone there seems to be so
geographically oriented that I wanted to query a larger audience.
Bob
----- Original Message ----- From: Obe, Regina To: Bob Pawley ;
PostgreSQL Sent: Tuesday, April 15, 2008 10:50 AM Subject: RE:
[GENERAL] Not Geography
I have Postgresql database that I would like to link to the
geometry side of Postgis. (This has little comparison to geography)
Does anyone know of a tool or documentation that could get me
started??
Bob
Bob, I don't quite understand your question. Are you not sure how to
install PostGIS, how to integrate it in your existing datbase, or
once you install how to get started using it? How to do it depends
on the operating system you are using. Once you have it installed
you may want to join the Postgis newsgroup for further help
http://postgis.refractions.net/mailman/listinfo/postgis-users
Hope that helps, Regina
--
Shane Ambler
pgSQL (at) Sheeky (dot) Biz
Get Sheeky @ http://Sheeky.Biz
