Fast random geographic coordinates (Lat/Lon) generator (Output stored in GeoJSON format).

Software library developed with C but Python accessible through Cython.

This library is for testing purposes.

Remarks: This algorithm (Pseudo-random geographic latitude/longitude generator) is developed using DRAND48 C function. DRAND48 function generates pseudo-random numbers (uniformly distributed) using the linear congruential algorithm and 48-bit integer arithmetic. I have choosen a linear congruential algorithm for this function because is fast and require minimal memory. For a better pseudo-randomness should be used other algorithms.

After compiling library...

$ make

...you can run generator from Python:

from pyrand_geojson import randGeojson

def test(nfeats, gjs_flname):
    randGeojson(nfeats, 0, gjs_flname)

def main():
    gjs_flname= "/tmp/rand_corrd.geojson"
    nfeats = 100000
    test(nfeats, gjs_flname)

if __name__ == '__main__':
  main()

You can test generator from Python with

$ python test.py

Developed by Cayetano Benavent. GIS Analyst at Geographica.

http://www.geographica.gs

This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version.