1. GeoHex
@sa2da #geohex
http://geohex.net/
2010 9 6

2. What’s GeoHex?
2010 9 6

3. Hex-Mapping Pattern
2010 9 6

4. GeoCoding System
2010 9 6

5. Covering for all locations
on GoogleMaps.
2010 9 6

6. Why GeoHex?
VS
Not GeoHex GeoHex
2010 9 6

7. 01
Cool interface
match for geogames
not cool
So Coooooooooool!!!
2010 9 6

8. 02
Equal in distance with
adjoinings
1 : 1.41 1:1
2010 9 6

9. 03
Similar to round shape
large crack small crack
2010 9 6

10. 04
Flexible size in many ways
linked with GoogleMaps’ zoom scale
Level:0 Level:24
2010 9 6

11. 05
Short codeing system
20 byte
3 - 11 byte
2010 9 6

12. 06
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();
}
2010 9 6

13. 07
Easy to share route data
35.661960,139.697900
132KpxU
35.660093,139.701741 2
.
. 3
.
. 2
. .
. .
20 × (n) byte 7 + (n) byte
2010 9 6

14. 08
Save privacy
ex) for
Lunch here
sa2da
Lunch here
sa2da
pinpoint
vague
2010 9 6

15. GeoHex for what?
2010 9 6

16. 01
Map tiles for geogames
kokogiko sa2da
2010 9 6

17. 02
Easy mehod substitute
for round search
2010 9 6

18. 03
Search system at degrees
2010 9 6

19. 04
For statistic systems
2010 9 6

20. 05
Search system along tracks
2010 9 6

21. 06
Step-counting system
for GPS tracking
11/40
START GOAL
1.4km 5.2km
2010 9 6

22. How to use GeoHex
2010 9 6

23. GeoHex is Open-Project
Creative Commons License
2010 9 6

24. Several libraries are provided
Perl
kokogiko
Ruby / GitHub
hal_sk
AS3
calcul_omikan
http://github.com/geohex/ Android’s
GeoHexV1
2010 9 6

25. URL: http://geohex.net
2010 9 6

26. GeoHex
Contact:
@sa2da #geohex
sa2da@geohex.net
2010 9 6