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SK53

Browsing rjw62's Mathmos QA site (osm.mathmos.net/addresses/pc-s) I noticed an OSM postcode centroid for Machrihanish village was oddly displaced. Turns out this is because of a golf course tagged with an address.

This is a classic example of a mismatch between physical & postal addresses (the postal address is in the village as one might expect), and the actual clubhouse on the course has a different postcode.

A map of the village of Machrihanish on the coast of the Mull of Kintyre. Green and Blue dots show mapped & unmapped postcode centroids respectively A blue line indicates the difference between these & centroids derived from OpenStreetMap data. In this case the centroid has moved onto a golf course
Another map of Machrihanish (from Overpass-Turbo) showing all the objects tagged with addr:postcode=P28 6PT highlighted with a blue outline. The Dunes golf couse is distant from the village and much closer to another one "Sound of Kintyre". The road distance is considerable as the airfield is in the way.
#OpenStreetMap#addresses#postcodes
Mar 26, 2023, 12:07 PM·Public
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