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Geohex v2 at GMS_nagoya
1.
GeoHex v2
@sa2da 2010.7.30 http://geohex.net/
2.
What’s GeoHex ?
3.
Hex-Mapping Model
4.
GeoCoding System
5.
Why GeoHex?
VS No GeoHex GeoHex
6.
Cool interface for
GeoGames not cool So Coooooool!!!
7.
Equal in distance 1
: 1.41 1:1
8.
Save Privacy
ex) for sa2da sa2da pinpoint vague
9.
Short Code 20 byte
3 - 11 byte
10.
Flexible Size
Level:18 Level:16 Level:14 Level:0 Level:24
11.
Easy to calculate
distance function getDistance(_x1,_y1, _x2,_y2) { _x2 = _x2 * Math.PI / 180.0; _y2 = _y2 * Math.PI / 180.0; _x1 = _x1 * Math.PI / 180.0; _y1 = _y1 * Math.PI / 180.0; var dx=_x2-_x1; var dy=_y2-_y1; var A = 6378137; // (6378137m) A.x - B.x var x = A * (dx) * Math.cos( _y1 ); var y = A * (dy); var old_exp = exp; dy=Math.log(Math.tan(Math.PI/4+_y2/2))-Math.log(Math.tan(Math.PI/4+_y1/2)); var rad=((dy>=0) ? 1:-1)*Math.acos(dx/Math.sqrt(dx*dx+dy*dy))*180.0/Math.PI; var tmpdist = Math.round(Math.sqrt(x*x + y*y)); totaldist = totaldist + tmpdist; distcnt(); }
12.
GeoHex for what?
Communication Game Tracking Index GIS Search Statistics
13.
What’s new in
v2 ?
14.
Extended Worldwide
15.
Same size in
every latitude same height fit map-chips
16.
New code system
Level:22 Level:16 Level:2
17.
Simple URL http://geohex.net/quhzpUv
18.
Coordinate transformed
with PROJ.4 WGS84 Google Mercator
19.
GeoHex is Open
Project Creative Commons License Join github Perl kokogiko Ruby / GitHub hal_sk AS3 calcul_omikan http://github.com/geohex/
20.
Thanks! Contact Documents
http://geogames.net/
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