[postgis-users] Postgis - Line to Point distance

[Ben Madin]

Peter,

Whilst I think it is common practice to refer to the coordinates as  
Lat Lon, I would argue that in a professional system it only matters  
that there is clarity (I am a licensed pilot).

So when using spherical coordinates people may refer to a location as  
North 1° East 43°, this would be professional. 22˚118˚ might seem  
OK, but people who only work in one hemisphere might erroneously think  
it to be West of the prime meridian. A reference to 14° -26°, would  
however be obviously ambiguous.

Having said that, I do believe that it is standard practice to always  
give eastings before northings (X before Y)  in Cartesian coordinate  
systems.

Cheers,

Ben


n 10/07/2009, at 9:22 PM, Peter Kukuča wrote:

> Well I have been constantly criticized from my colleagues for using  
> lon first, lat second. I have been told I am the only person on the  
> planet to do so and that all professional systems use lat, lon  
> instead.
>
> 2009/7/10 Pavel Iacovlev <iacovlev.pavel at gmail.com>
>> Yes they are in "reverse order", there is no standard for lat or lon
>> should be first (as I know), blame wkb/wkt :)
>

-- 

Ben Madin
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