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How to get more accurate PO position in downloaded files ?  XML
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dezix



Joined: 21/03/2017 11:08:07
Messages: 3
Offline

Hi!

Why lon/lat position of post-offices in the downloaded file from source => http://download.geonames.org/export/zip/FR.zip
do not be as accurate as locations shown by "S PO post office" objects in the GeoNames Site Map ?

I've just checked the 3 following post offices (which I'm very sure of their locations)
=> the 3 entries in FR.txt are different and less accurate than map PO objects !

Code:
 Bureau de Poste de Saint Amand Montrond
 ref: 8290210		S PO post office 
 46.72437, 2.50617   ok!
 46.7167	2.5167		FR.txt => not accurate
 

I've tried such string : http://api.geonames.org/postalCodeSearch?postalcode=18200&....&country=FR

which answer the same as FR.txt
<lat>46.71667</lat><lng>2.51667</lng>

Code:
 Bureau de Poste de Lignieres
 ref: 8290196		S PO post office 
 46.75235, 2.17595	ok!
 46.7515	2.1738		FR.txt => not accurate
 
 Bureau de Poste de Chateauneuf Sur Cher
 ref: 8290180		S PO post office 
 46.85748, 2.31939	ok!
 46.8578	2.3171		FR.txt => not accurate
 


So should be quite clumsy to use this file with those poor data, if better are available.

Please, is there some easy way to fix that ?

Thanks for answers.
dezix



Joined: 21/03/2017 11:08:07
Messages: 3
Offline

Of course I understand that at least in France all the communes does not have a post office
It would seem logical in this case to provide a position corresponding to the center of the locality

But for towns or villages with a post office then it would be more logical to indicate the actual position of the post office concerned
dezix



Joined: 21/03/2017 11:08:07
Messages: 3
Offline

I think, I've found a solution :

http://download.geonames.org/export/dump/FR.zip

contains the whole set of data for France,

so now I will extract the post offices list with accurate positions from it,
they are tagged with "S PO FR "

 
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