How to calculate a distance between two cities using cartography?

Question

I have latitude and longitude of two cities. Is there any free option to calculate the travel distance between these cities using cartography?

At the moment, I implemented the Haversine formula for computing the great-circle distance. Then I multiply the distance by the correction factor (e.g. 0.7 - measured empirically).

This approach gives a quick approximation. But how can I do the same thing using a real cartography?

you mean the distance e.g. by using roads to travel from a to b? — Dr.Molle, Sep 02 '15 at 12:12

score 0 · Answer 1 · answered Sep 02 '15 at 12:28

0

You may e.g. use the Distance Matrix API

Sample-Request(driving-distance from paris to rome)

https://maps.googleapis.com/maps/api/distancematrix/json?origins=paris&destinations=rome&mode=driving

answered Sep 02 '15 at 12:28

Dr.Molle

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How to calculate a distance between two cities using cartography?

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