Difference between revisions of "Somosomo, Fiji"

Revision as of 17:45, 1 July 2008

[[Category:Meetup in {{{lat}}} {{{lon}}}| ]]

Note: The graticule map appears to be buggy for location -180, and the google maps data is also incomplete

Taveuni is the third largest island of Fiji in the Pacific, and is one of the few places where the 180th meridian crosses land. However, unlike the prime meridian, the neighbouring geohashes are NOT mirrored around the line. Rather, geohash algorithm meridians are at 30W and 180. ie, you use the different 30W formula adjustment on each side of the line - allowing for neighbouring hashpoints to potentially be VERY close. (someone else can work out the odds for two graticule points to land on Taveuni for the same day)

A good example of this is the 12th May 2008, as shown below...

@@ Line 6: / Line 6: @@
 {{note|The graticule map appears to be buggy for location -180, and the google maps data is also incomplete}}
-Taveuni is the third largest island of Fiji in the Pacific, and is one of the few places where the 180th meridian crosses land. Because of this, like the prime meridian, the neighbouring geohashes are mirrored around the line - allowing for  neighbouring hashpoints to potentially be VERY close. (someone else can work out the odds for two graticule points to land on Taveuni for the same day)
+Taveuni is the third largest island of Fiji in the Pacific, and is one of the few places where the 180th meridian crosses land. However, unlike the prime meridian, the neighbouring geohashes are NOT mirrored around the line. Rather, geohash algorithm meridians are at 30W and 180. ie, you use the different 30W formula adjustment on each side of the line - allowing for  neighbouring hashpoints to potentially be VERY close. (someone else can work out the odds for two graticule points to land on Taveuni for the same day)
-This is best exampled by comparing the following two maps, both for 12th May 2008.
+A good example of this is the 12th May 2008, as shown below...
 * http://irc.peeron.com/xkcd/map/map.html?date=2008-05-12&lat=-17&long=-179&zoom=9&abs=1

–	–	Pacific Ocean
–	Somosomo, Fiji	Pacific Ocean
–	–	–