3D Path Profile/Line of Sight Question

richrich Global Mapper UserPosts: 1
edited September 2008 in How I use Global Mapper
Hi,
first of all: GlobalMapper is a great tool, lightweight and easy to use.

I am currently playing around with the "3D Path Profile/Line of Sight" and I noticed, that it handles large distances as well, by drawing a curved profile of the line.

I'd like to implement that one for myself as well, so my questions are:
Do you have any papers or links how to implement "Line of Sight" on a lat/long grid?

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