Difference between revisions of "User:Fbfree"
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| − | Although I have known about geohashing for awhile, I have only just begun hashing. | + | Although I have known about geohashing for awhile, I have only just begun hashing. I am without a GPS or camera, and I attempt most Geohashes by bicycle. |
| + | == Margin of Error == | ||
| − | + | The Margin of Error requirement for claiming a successful geohash relies on a margin calculated from a GPS device. I generally use pilotage on Google Earth images to find the point. Google does not publish the uncertainty of it's images and map placements, so I use a 20m error to define success.[http://www.mdpi.com/1424-8220/8/12/7973/pdf] Many cities now also provide GIS information, so if a survey marker can be found, I can increase my accuracy many times over. Unfortunately, this also results in more unsuccessful hashes. | |
| + | |||
| + | == Hashes == | ||
[[2009-06-12_49_-122]] | [[2009-06-12_49_-122]] | ||
Revision as of 16:52, 3 July 2009
Although I have known about geohashing for awhile, I have only just begun hashing. I am without a GPS or camera, and I attempt most Geohashes by bicycle.
Margin of Error
The Margin of Error requirement for claiming a successful geohash relies on a margin calculated from a GPS device. I generally use pilotage on Google Earth images to find the point. Google does not publish the uncertainty of it's images and map placements, so I use a 20m error to define success.[1] Many cities now also provide GIS information, so if a survey marker can be found, I can increase my accuracy many times over. Unfortunately, this also results in more unsuccessful hashes.
Hashes
2009-06-12_49_-122 Travelled from home ~ 4km by bicycle. Hash point on fenced private property. Arrived 3pm, read newspaper within 100m of hashpoint on small piece of lawn, approached as close as possible to the point at 4pm. Left 'Lisp'[2] xkcd comic printout at local postoffice box in front of the property. Leisurely return home via new subdivisions.
2009-06-16_49_-122 Trip across the river to Abbotsford. Traveled to the hash point directly by bicycle. Passed by the point, located on a residential porch, then explored Mill Lake park. Stopped for strawberries on the return. A hi-rail driver who I had crossed in front of earlier today stopped by as I was eating, but didn't recognize me.
Achievements
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This user earned the Bicycle geohash achievement
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This user earned the Land geohash achievement
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Consolations (Hash not reached)
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This user earned the No Batteries Geohash Achievement
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This user earned the No trespassing consolation prize
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This user earned the Media Attention Geohash Achievement
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