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March 2014 update

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Ingy döt Net 2014-04-02 16:56:35 +00:00
parent 09687c4926
commit a25938f123
1846 changed files with 21876 additions and 5203 deletions
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25
Task/Haversine-formula/Python/haversine-formula.py
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@ -1,14 +1,19 @@
>>> import math
>>> def haversine(lat1, lon1, lat2, lon2):
R = 6372.8
# In kilometers
dLat = math.radians(lat2 - lat1)
dLon = math.radians(lon2 - lon1)
lat1 = math.radians(lat1)
lat2 = math.radians(lat2)
from math import radians, sin, cos, sqrt, atan2
def haversine(lat1, lon1, lat2, lon2):
R = 6372.8
# In kilometers
dLat = radians(lat2 - lat1)
dLon = radians(lon2 - lon1)
lat1 = radians(lat1)
lat2 = radians(lat2)
a = sin(dLat/2.)*sin(dLat/2.) + sin(dLon/2.)*sin(dLon/2.)*cos(lat1)*cos(lat2)
c = 2.*atan2(sqrt(a),sqrt(1-a))
a = math.sin(dLat / 2) * math.sin(dLat / 2) + math.sin(dLon / 2) * math.sin(dLon / 2) * math.cos(lat1) * math.cos(lat2)
c = 2 * math.asin(math.sqrt(a))
return R * c
>>> haversine(36.12, -86.67, 33.94, -118.40)