Difference between revisions of "AppInventor: Menghitung Jarak dan Arah dari GPS"
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Sumber: https://sites.google.com/site/appinventor/distance-based-on-lat-long | Sumber: https://sites.google.com/site/appinventor/distance-based-on-lat-long | ||
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| + | ==Menghitung Jarak== | ||
| + | |||
| + | Jarak: | ||
distance = sqrt(x^2 + y^2) | distance = sqrt(x^2 + y^2) | ||
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x = 69.1 * (lat2 - lat1) | x = 69.1 * (lat2 - lat1) | ||
y = 69.1 * (lon2 - lon1) * cos(lat1/57.3) | y = 69.1 * (lon2 - lon1) * cos(lat1/57.3) | ||
| + | |||
| + | |||
| + | ==Menghitung Arah== | ||
| + | |||
| + | Arah: | ||
| + | |||
| + | β = atan2(X,Y), | ||
| + | |||
| + | Dimana | ||
| + | |||
| + | X = cos θb * sin ∆L | ||
| + | Y = cos θa * sin θb – sin θa * cos θb * cos ∆L | ||
| + | |||
| Line 13: | Line 30: | ||
* https://sites.google.com/site/appinventor/distance-based-on-lat-long | * https://sites.google.com/site/appinventor/distance-based-on-lat-long | ||
| + | * http://www.igismap.com/formula-to-find-bearing-or-heading-angle-between-two-points-latitude-longitude/ | ||
Revision as of 17:15, 10 October 2015
Sumber: https://sites.google.com/site/appinventor/distance-based-on-lat-long
Menghitung Jarak
Jarak:
distance = sqrt(x^2 + y^2)
Dimana:
x = 69.1 * (lat2 - lat1) y = 69.1 * (lon2 - lon1) * cos(lat1/57.3)
Menghitung Arah
Arah:
β = atan2(X,Y),
Dimana
X = cos θb * sin ∆L Y = cos θa * sin θb – sin θa * cos θb * cos ∆L