Bisecting planet Earth using two GIS or geo points

General physics and astronomy discussions not directly related to Celestia
Topic author
mikael

Bisecting planet Earth using two GIS or geo points

Post #1by mikael » 12.10.2004, 05:17

Hi Does anyone know of a program that will list various points along a line
when bisecting earth? Imagine an orange cut in half, 1/4 etc. and along the cut line the circumfrence of the planet. The reason for this will be listed on this server after what I am looking for is either found or not.
A very awesome outcome if I can verify some coordinates with this type of program. Thanks for the help. Pax.

Mikael

tony873004
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Post #2by tony873004 » 12.10.2004, 20:17

I"m not quite sure I understand your question.

If you want points on the great circle, its just 0 to 360 degrees.

If you want them as x & y points you could do x = cos(degree) * radius of Earth, y = sin(degree) * radius of Earth.

If you want latitude and longitude coordinates on the surface of the earth, the trig is more complicated.


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