Given coordinates:
min_lat=25.862491496700553
max_lat=26.358213103705367
min_lng=-80.790159828186
max_lng=-79.78628409576413
Is is possible to determine a radius?
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Dan Is Fiddling By Firelight
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brupm
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You gave two points, what do you want to do with them. – Jmyster Mar 12 '12 at 22:35
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Those coordinates are for SE and NW edges of the google maps square. – brupm Mar 13 '12 at 14:41
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classic circle inscribed in a square problem? – JavaSheriff Jul 15 '14 at 20:24
2 Answers
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"Given [two geographic points] [i]s it possible to determine a radius?"
As asked, no.
A radius is the distance from the center of a circle or sphere to its perimeter. It is used for 2D circles and 3D spheres.
That said, I suspect you may in fact being trying to ask a different question that can be answered.
- You may be asking for either the "great circle distance" between two points (each point with a latitude and longitude value);
I would suggest reading Calculate distance, bearing and more between Latitude/Longitude points by Chris Veness and the StackOverflow question here: "How do I calculate distance between two latitude-longitude points?"
If you need a unusually high degree of accuracy (far more than almost everyone using Google Earth needs) you can use the Vincentry Formula which takes into account an ellipsoidal Earth model, as the Earth is not a perfect sphere.
- Or you may of meant that you wish to find the mid-point of the four line segments along the perimeter of max and min latitude and longitude. e.g. (min_lat, min_lon), (min_lat, max_lon), (max_lat, min_lon), and (max_lat, max_lon), a less frequent request.
This covered in more detail in the StackOverflow question "Mid point of two point where latitude and longitude given."
