[OSM-talk] Wrong scale in slippy map

Dirk-Lüder Kreie osm-list at deelkar.net
Thu Apr 23 09:46:22 BST 2009


Lars Aronsson schrieb:
> Looking at the area where I live, 
> http://www.openstreetmap.org/?lat=58.407&lon=15.600&zoom=18&layers=B000FTF
> 
> these buildings are 11 metres wide and not 22 metres as the scale 
> indicates. The difference is explained by the latitude 58.4 
> degrees and cosine(60°) = 0.5.
> 
> Maybe one year back, I reported exactly this bug in JOSM and it 
> was fixed.  Now I find it in the slippy map.  How long has it been 
> there?  Is it an OpenStreetMap bug or a OpenLayers bug?

This didn't work correctly from the start.
It's an OpenLayers bug, since OpenLayers has no dynamic scale object IIRC.



-- 

Dirk-Lüder "Deelkar" Kreie
Bremen - 53.0952°N 8.8652°E

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