bin/find_avg_population_density

   1 #!/usr/bin/python
   2
   3 # Basically, add '../src' to our path.
   4 import sys, os, site
   5 site.addsitedir(os.path.dirname(os.path.abspath(sys.argv[0])) + '/../src')
   6
   7 import ExitCodes, GPS, SummaryFile1
   8
   9 # Find the average population density of a set of GPS coordinates
  10 # given a (SF1) geographic header file.
  11
  12 if (len(sys.argv) < 4):
  13     print "Usage: %s <latitude> <longitude> <geo_file>" % sys.argv[0]
  14     raise SystemExit(ExitCodes.NotEnoughArgs)
  15
  16 # If we made it here, it's sort of safe to parse the arguments
  17 # and hope they're in order.
  18
  19 coords = GPS.Coordinates()
  20 coords.latitude = float(sys.argv[1])
  21 coords.longitude = float(sys.argv[2])
  22 geo_file_path = sys.argv[3]
  23
  24 avg_density = SummaryFile1.FindAveragePopulationDensity(coords, geo_file_path)
  25
  26 print str(avg_density)
  27