Difference between revisions of "Talk:2010-11-01 53 10"
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Hi, | Hi, | ||
| − | my first guess is that set your GPS to the wrong [[wikipedia:datum (geodesy)|geodetic datum]], like the old german ''Potsdam Datum'' (this would actually usually result in an error of about 100m). While these old local systems allow a little bit more accuracy for smaller areas, they are hardly used any more today because they are not useful outside the region they are made for. All current mapping systems run on the worldwide standard '''WGS84''' instead, and this is what we use for geohashing as well. So I would recommend to check the settings on the GPS if it's set to WGS84. If it is, and it's still wrong, then you might have a problem ;) --[[User:Ekorren|Ekorren]] 19:33, 2 November 2010 (UTC) | + | my first guess is that you set your GPS to the wrong [[wikipedia:datum (geodesy)|geodetic datum]], like the old german ''Potsdam Datum'' (this would actually usually result in an error of about 100m). While these old local systems allow a little bit more accuracy for smaller areas, they are hardly used any more today because they are not useful outside the region they are made for. All current mapping systems run on the worldwide standard '''WGS84''' instead, and this is what we use for geohashing as well. So I would recommend to check the settings on the GPS if it's set to WGS84. If it is, and it's still wrong, then you might have a problem ;) --[[User:Ekorren|Ekorren]] 19:33, 2 November 2010 (UTC) |
Revision as of 19:33, 2 November 2010
Congratulations, on both the hash and the (far more important) girlfriend interest in the GPS. -Robyn 19:04, 2 November 2010 (UTC)
Coordinates difference
Hi,
my first guess is that you set your GPS to the wrong geodetic datum, like the old german Potsdam Datum (this would actually usually result in an error of about 100m). While these old local systems allow a little bit more accuracy for smaller areas, they are hardly used any more today because they are not useful outside the region they are made for. All current mapping systems run on the worldwide standard WGS84 instead, and this is what we use for geohashing as well. So I would recommend to check the settings on the GPS if it's set to WGS84. If it is, and it's still wrong, then you might have a problem ;) --Ekorren 19:33, 2 November 2010 (UTC)
