[Geocoding] Question regarding co-ordinate systems

[Scott Neville]

Hi,

Hopefully a simple question, but if you were building something 
completely new, how would you record the data? Specifically if you 
wanted to use OSM, would you store the co-ordinates in EPSG:3857 or 
EPSG:4326? Of course if you need to exchange data with other systems 
EPSD:4326 might be more useful as users are fairly familiar with the 
idea of latitude/longitude, however given this would be the exception 
rather than the rule, is there any merit in storing the data in 
EPSG:3857 and converting to EPSG:4326 when needed? Would this be any 
faster with less conversions going on to plot the data on a map? If this 
is sensible is there an easy way to convert EPSG:3857 to tile names like 
there is for EPSG:4326?

Your thoughts are appreciated.

Thanks

Scott



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