From: | Bruce Momjian <pgman(at)candle(dot)pha(dot)pa(dot)us> |
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To: | Bruno Wolff III <bruno(at)wolff(dot)to> |
Cc: | pgsql-general(at)postgresql(dot)org |
Subject: | Re: Making small bits of code available |
Date: | 2002-09-06 13:58:00 |
Message-ID: | 200209061358.g86Dw0k08568@candle.pha.pa.us |
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Lists: | pgsql-general pgsql-hackers |
/contrib/earthdistance already exists. Is this new functionality?
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Bruno Wolff III wrote:
> I have some sql to define some functions for doing conversions between
> cube and latitude and longitude (as float8) and for calculating
> great circle distances between cubes (using a spherical model of the earth).
> I am not sure the code is suitable for contrib.
> The code picks a radius of the earth in meters. Other people may choose to
> use different units or even use a different radius in meters.
> I have grants in the code to make the cube functions and the functions
> defined by the script as execute for public. (The cube stuff needs to be
> done as postgres since a type is created, but then the functions aren't
> generally accessible by default.)
> The script is about 5K.
> Some people might find this useful as there are some advantages to keeping
> track of locations on the earth using cube (with 3D coordinates) as opposed
> to using point (with 2D coordinates).
>
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--
Bruce Momjian | http://candle.pha.pa.us
pgman(at)candle(dot)pha(dot)pa(dot)us | (610) 359-1001
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