How to state the compass direction between two coordinates

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Sam Accura
Sam Accura 2019-2-14
评论： Sam Accura 2019-2-14
What code can state the direction between two coordinates?
For example,
Input a,b;c,d (a,b to c,d)
a,b (x,y coordinates from place 1) to b,c (x,y coordinates to place 2)
Output: N,NE,E,SE,S,SW,W,NW or here (if it's the same place)?
Number examples:
Input: 1,1;1,2
Output = N
Input: 1,1:2,1
Output = E
Input 1,1:2,2
Output = NE
Input: 1,1:0,0
Output = SW
Input 13,13;13,13
Output = 'Here'

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Matt J
Matt J 2019-2-14
编辑：Matt J 2019-2-14
You would do
angle=atan2d(d-b,c-a);
and then, based on the numeric value of angle, assign a compass direction:
  2 个评论
Sam Accura
Sam Accura 2019-2-14
编辑：Sam Accura 2019-2-14
Yes that function is perfect. How though would you donate the input variables to a,b;c,d format?
i.e how would you link input 1,2;3,4 to a,b;c,d for the formula?

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