16_distrance_from_city_center.py

filter2_nhoods = filter2_nhoods.reindex( columns = filter2_nhoods.columns.tolist() + ['Distance from LA center (in km)'])  #this way to avoid warnings

from math import radians, sin, cos, acos

slat = radians(34.0536909) #LA center Latitude obtained earlier
slon = radians(-118.2427666) #LA center Longitude obtained earlier

for n in range(0,len(filter2_nhoods)):
    
    elat = radians(filter2_nhoods.iloc[n,1])
    elon = radians(filter2_nhoods.iloc[n,2])

    dist = 6371.01 * acos(sin(slat)*sin(elat) + cos(slat)*cos(elat)*cos(slon - elon))
    filter2_nhoods.loc[n,'Distance from LA center (in km)']=dist
    
    
filter2_nhoods.sort_values(by='Distance from LA center (in km)',inplace=True)
filter2_nhoods.reset_index(drop=True,inplace=True)
filter2_nhoods