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Gunamoi GreatCirc 3.3 (x86/x64)

File size: 12.2 / 14 MB





GreatCirc is a tool for calculating Great Circle distances on the earth's surface, and plotting points and great circle paths on a world map.
The "great circle path" is the shortest direct route between two points on the earth's surface. Because the earth is a globe, the shortest path between any two points lies on a circle which is centred at the earth's core and passes around the surface of the world. Such a path will appear to be a curved line when drawn on a flat world map because of the distortion inherent in mapping the globe onto a flat map.
Features :

Great Circle Distance calculation: find the shortest distance and direction between two points. (example)
Great Circle End Point calculation: find the end point of a great circle path, given start, distance and direction.
Rhumb Line Calculation: find the distance between two points along a line of constant bearing.
Enter map points by clicking on the world map. Left-click for Point 1, right click for Point 2.
Choose map points from a built-in list of Major Cities.
Enter map points using Australian Map Grid (AMG) coordinates.
Perform calculations using a simple spherical earth model, or the WGS84 standard ellipsoid.