Difference between revisions of "Couch Potato Geohash"

From Geohashing
imported>Osmie
(Simplified formula & corrected odds (which were out by a factor of 1000))
imported>Osmie
m (Fixed my own revised formula. Oops. :()
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The following users have won the Couch Potato Geohash Achievement. This achievement can be attained only when the place where you live is exactly under the coordinates of a particular day. This is incredibly lucky, and the chance of this happening to you is the area of your domicile divided by the area of the quadrangle you're in. Assuming a sphere of radius R (Earth is approximately 6,378,000m), θ = the absolute value of your graticule's latitude in degrees, and H = the size of your domicile in square metres, then the probability P is represented by the following formula:
 
The following users have won the Couch Potato Geohash Achievement. This achievement can be attained only when the place where you live is exactly under the coordinates of a particular day. This is incredibly lucky, and the chance of this happening to you is the area of your domicile divided by the area of the quadrangle you're in. Assuming a sphere of radius R (Earth is approximately 6,378,000m), θ = the absolute value of your graticule's latitude in degrees, and H = the size of your domicile in square metres, then the probability P is represented by the following formula:
  
<center>P&nbsp;=&nbsp;H&nbsp;&middot;&nbsp;(&pi;R<sup>2</sup>&nbsp;/&nbsp;180)&nbsp;&middot;&nbsp;[sin(&theta;+1)&nbsp;-&nbsp;sin(&theta;)]</center>
+
<center>P&nbsp;=&nbsp;H&nbsp;/&nbsp;(&nbsp;[&pi;R<sup>2</sup>&nbsp;/&nbsp;180]&nbsp;&middot;&nbsp;[sin(&theta;+1)&nbsp;-&nbsp;sin(&theta;)]&nbsp;)</center>
  
 
A typical apartment dweller in [[Denver, Colorado]] (latitude 39&deg;) has a chance of around one in 10,600,000.
 
A typical apartment dweller in [[Denver, Colorado]] (latitude 39&deg;) has a chance of around one in 10,600,000.

Revision as of 19:04, 26 May 2008

Couch Potato Geohash Icon

The following users have won the Couch Potato Geohash Achievement. This achievement can be attained only when the place where you live is exactly under the coordinates of a particular day. This is incredibly lucky, and the chance of this happening to you is the area of your domicile divided by the area of the quadrangle you're in. Assuming a sphere of radius R (Earth is approximately 6,378,000m), θ = the absolute value of your graticule's latitude in degrees, and H = the size of your domicile in square metres, then the probability P is represented by the following formula:

P = H / ( [πR2 / 180] · [sin(θ+1) - sin(θ)] )

A typical apartment dweller in Denver, Colorado (latitude 39°) has a chance of around one in 10,600,000.

If this does happen to you, you are required to throw a mad-keen party at a day's notice.

This is one of those things that probably won't ever happen, but how cool would it be if it did?

Winners

Nobody has won this yet, be the first!