Perl – Calculate distance between two points in an OpenStreetMap file

distanceopenstreetmapperl

I need to calculate the distance between two points in a map in the same way as Google Maps' distance matrix and get direction APIs.

Since I have to use offline more, I have to work with OpenStreetMap data.

I have downloaded the planet.osm file for the map data. How do I calculate the distance between two points with the OpenStreetMap file?

Best Answer

There are already several routing solutions for OpenStreetMap (OSM), including various web services, standalone programs, and libraries. You are probably interested in one of the many offline routers.

Related Solutions

C# – How to use OpenStreetMap to get distance between two points

OpenStreetMap does not have their own routing algorithm.

On the OpenStreetMap wiki, there's a list of software libraries that perform routing. The Intermodal Transport Routing Information System is written in C#.

Python – Haversine Formula in Python (Bearing and Distance between two GPS points)

Here's a Python version:

from math import radians, cos, sin, asin, sqrt

def haversine(lon1, lat1, lon2, lat2):
    """
    Calculate the great circle distance in kilometers between two points 
    on the earth (specified in decimal degrees)
    """
    # convert decimal degrees to radians 
    lon1, lat1, lon2, lat2 = map(radians, [lon1, lat1, lon2, lat2])

    # haversine formula 
    dlon = lon2 - lon1 
    dlat = lat2 - lat1 
    a = sin(dlat/2)**2 + cos(lat1) * cos(lat2) * sin(dlon/2)**2
    c = 2 * asin(sqrt(a)) 
    r = 6371 # Radius of earth in kilometers. Use 3956 for miles. Determines return value units.
    return c * r

Best Answer

Related Solutions

C# – How to use OpenStreetMap to get distance between two points

Python – Haversine Formula in Python (Bearing and Distance between two GPS points)

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