Why the Distance between two cities is approximate in google map

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hi friends

when we find the distance between two cities(example city A and city B) in Google map it be approximate distance only , why it is not exact distance pl tell me the reason with example

Posted 21-Apr-10 9:21am

pradeep kumar patwari

Updated 21-Apr-10 17:55pm

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Pete O'Hanlon · Answer 1 · 2010-04-21T09:27:00

Solution 1

And what points would you use to delineate the cities? The centre? The edge? Which edge?

Posted 21-Apr-10 9:27am

Pete O'Hanlon

William Winner · Answer 2 · 2010-04-21T10:02:00

Solution 3

Also, it is most likely distance without accounting for elevation changes.

Posted 21-Apr-10 10:02am

William Winner

Gregory Gadow · Answer 3 · 2010-04-21T09:31:00

Solution 2

How do you define "distance"? A direct line between two entirely arbitrary points? In terms of driving, which may involve straight or very twisted roads?

The word "approximate" in this situation is Legalese for, "We are doing our best to provide accurate information; please don't sue us."

Posted 21-Apr-10 9:31am

Gregory Gadow

The Manoj Kumar · Answer 4 · 2010-04-21T20:10:00

Solution 4

Some of the distance calculations are explained here[^]. Try this link, hopefully it will help you.

Posted 21-Apr-10 20:10pm

The Manoj Kumar

aroonthapa · Answer 5 · 2013-08-23T23:10:00

Solution 5

Yes! distance provided by Google API's Geometry.Spherical.computeDistanceBetween() is never accurate, In fact this distance is calculated assuming Earth as a sphere which is not accurate. Detail about the EARTH's Spherical concept is mentioned here: EARTH AS A SPHERE

Posted 23-Aug-13 23:10pm

aroonthapa

Updated 24-Aug-13 20:05pm

v2