INITIAL COMMIT

This commit is contained in:
2023-02-25 22:39:57 +00:00
commit 1a050d28e2
10 changed files with 342 additions and 0 deletions

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from math import radians, sin, cos, sqrt, asin
def haversine_of_degrees(x0, y0, x1, y1, radius):
dy = radians(y1 - y0)
dx = radians(x1 - x0)
y0 = radians(y0)
y1 = radians(y1)
root_term = (sin(dy / 2) ** 2) + cos(y0) * cos(y1) * (sin(dx / 2) ** 2)
result = 2 * radius * asin(sqrt(root_term))
return result

40
python/haversine_json.py Normal file
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# Naive Python version of the code
import os
from haversine_algorithm import haversine_of_degrees
import time
import json
filepath = os.path.join(
os.path.dirname(os.path.dirname(os.path.abspath(__file__))),
"data_10000000_flex.json",
)
with open(filepath, "r") as json_file:
start_time = time.time()
json_input = json.load(json_file)
mid_time = time.time()
earth_radius_km = 6371
sum = 0
count = 0
for pair in json_input["pairs"]:
sum += haversine_of_degrees(
pair["x0"], pair["y0"], pair["x1"], pair["y1"], earth_radius_km
)
count += 1
average = sum / count
end_time = time.time()
print(f"Result: {average}")
print(f"Input = {mid_time - start_time} seconds")
print(f"Math = {end_time - mid_time} seconds")
print(f"Total = {end_time - start_time} seconds")
print(f"Throughput = {count / (end_time - start_time)} haversines/second")