[OSM-dev] slippymap doesnt wrap around +-180deg

Stefan Baebler stefan.baebler at gmail.com
Wed Apr 2 16:13:13 BST 2008


John, when going West on this map on the given URL the longitude -179 
(179W) should become +179 (179E), but it rolls over to +91979, giving 
the url:
http://johnmckerrell.com/map/#t=mapnik&lat=-41.86956&lon=91979.537&zf=7
Better, but not exactly perfect either :)

Stefan

John McKerrell wrote:
> Try this instead:
>
> http://johnmckerrell.com/map/#t=mapnik&lat=-41.96766&lon=-179.73632&zf=7 
> <http://johnmckerrell.com/map/#t=mapnik&lat=-41.96766&lon=-179.73632&zf=7>
>
>
> On 2 Apr 2008, at 14:49, Luka Frelih wrote:
>> hello!
>>
>> i just noticed that our slippymap resists crossing the 180 degree 
>> meridian (intl date line).
>> try zooming in on new zealand at this link: 
>> http://www.openstreetmap.org/?lat=-41.47&lon=-179.23&zoom=6 
>> <http://www.openstreetmap.org/?lat=-41.47&lon=-179.23&zoom=6>
>>
>> i guess this is unintended. not sure whether we inherited this bug from 
>> openlayers or introduced it ourselves. either way i guess someone here 
>> will know what's going on.
>>
>> best,
>> LF
>>
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