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run.py
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run.py
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import copy
import ephem
import jdatetime
import json
import math
import os
import utm
from datetime import timedelta
BASE_DIR = os.path.dirname(os.path.realpath(__file__))
DATA_DIR = os.path.join(BASE_DIR, 'data')
ACCIDENT_FILE_PATH = os.path.join(DATA_DIR, 'accidents.tsv')
OUTPUT_DIR = os.path.join(BASE_DIR, 'output')
GEOJSON_FILE_PATH = os.path.join(OUTPUT_DIR, 'out.geojson')
TEHRAN_AVERAGE_ELEVATION = 1189 # meters
TEHRAN_TO_UTC = timedelta(hours=4, minutes=30)
def _get_datetime(date, time, year_month):
if date and time:
if len(date) == 8:
year = int(date.strip()[:4])
month = int(date.strip()[4:6])
else:
year = int(year_month.split('.')[0])
month = int(year_month.split('.')[1])
day = int(date.strip()[-2:])
if len(time) < 4:
time = '0' * (4 - len(time)) + time
hour = int(time[:2])
minute = int(time[2:])
return jdatetime.datetime(year, month, day, hour, minute).togregorian()
return None
def _get_light(datetime, lat, long):
"""
https://stackoverflow.com/questions/43299500/pandas-convert-datetime-timestamp-to-whether-its-day-or-night
https://www.timeanddate.com/astronomy/different-types-twilight.html
"""
if datetime:
sun = ephem.Sun()
observer = ephem.Observer()
observer.lat, observer.lon, observer.elevation = lat, long, TEHRAN_AVERAGE_ELEVATION
observer.date = datetime - TEHRAN_TO_UTC
sun.compute(observer)
current_sun_alt = sun.alt
angle = current_sun_alt * 180 / math.pi
if 0 < angle:
return 'day'
elif -6 < angle < 0:
return 'civil'
elif -12 < angle < -6:
return 'nautical'
elif -18 < angle < -12:
return 'astronomical'
else:
return 'night'
return None
def _simple_light(light):
if light == 'civil' or light == 'nautical' or light == 'astronomical':
return 'twilight'
else:
return light
def _clean_age(age):
if age:
return int(age)
return None
def _clean_vehicle(vehicle):
vehicle = vehicle.strip()
if vehicle in ['سواري', 'سواری', 'راننده خودرو', 'سرنشین خودرو']:
return 'car'
elif vehicle == 'آمبولانس':
return 'ambulance'
elif vehicle == 'دوچرخه':
return 'bike'
elif vehicle == 'وانت بار':
return 'pickup_truck'
elif vehicle in ['موتورسيکلت', 'سرنشین موتور', 'راکب موتور']:
return 'motorcycle'
elif vehicle in ['کاميون', 'کاميونت']:
return 'truck'
elif vehicle in ['عابر', 'عابر پیاده']:
return 'pedestrian'
elif vehicle == 'ميني بوس':
return 'mini_bus'
elif vehicle in ['تريلر', 'تريلي']:
return 'trailer'
elif vehicle == 'اتوبوس':
return 'bus'
elif vehicle == 'میکسر':
return 'cement_mixer'
return 'other'
def _simple_vehicle(clean_vehicle):
if clean_vehicle not in ['car', 'bike', 'motorcycle', 'pedestrian']:
return 'heavy'
return clean_vehicle
def _clean_gender(gender):
if int(gender) == 1:
return 'man'
else:
return 'woman'
def _data_generator():
with open(ACCIDENT_FILE_PATH, 'r') as accident_file:
for i, line in enumerate(accident_file.readlines()):
if i > 0: # skip header
split_line = line.strip().split('\t')
if len(split_line) == 54:
gender = _clean_gender(split_line[3])
age = _clean_age(split_line[4])
date = split_line[17]
time = split_line[18]
year_month = split_line[47]
datetime = _get_datetime(date, time, year_month)
vehicle_deceased = _simple_vehicle(_clean_vehicle(split_line[29]))
vehicle_killer = _simple_vehicle(_clean_vehicle(split_line[36]))
accident_reason = split_line[44].strip()
utm_x = int(float(split_line[50]))
utm_y = int(float(split_line[51]))
lat, long = utm.to_latlon(utm_x, utm_y, 39, 'S')
light = _simple_light(_get_light(datetime, lat, long))
yield {
'gender': gender,
'age': age,
'datetime': datetime,
'vehicle_deceased': vehicle_deceased,
'vehicle_killer': vehicle_killer,
'accident_reason': accident_reason,
'utm_x': utm_x,
'utm_y': utm_y,
'lat': lat,
'long': long,
'light': light,
}
def run():
features = []
for entry in _data_generator():
modified_entry = copy.deepcopy(entry)
del modified_entry['lat'], modified_entry['long']
if modified_entry['datetime']:
modified_entry['datetime'] = modified_entry['datetime'].strftime("%Y-%m-%d %H:%M:%S")
features.append({
'type': 'Feature',
'geometry': {
'type': 'Point',
'coordinates': [entry['long'], entry['lat']],
},
'properties': modified_entry,
})
with open(GEOJSON_FILE_PATH, 'w') as geojson_file:
geojson_file.write(json.dumps(
{
'type': 'FeatureCollection',
'features': features,
}
))
if __name__ == "__main__":
run()