Averages/Mean angle: Difference between revisions
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m (made R solution just submitted by me slightly more general) |
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(defun degrees (angle) |
(defun degrees (angle) |
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(* |
(* (/ 180 pi) angle)) |
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(defun mean-angle (angles) |
(defun mean-angle (angles) |
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(loop for angles in '((350 10) (90 180 270 360) (10 20 30)) |
(loop for angles in '((350 10) (90 180 270 360) (10 20 30)) |
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do (format t "~&The mean angle of ~a is ~$°." angles (mean-angle angles))) |
do (format t "~&The mean angle of ~a is ~$°." angles (mean-angle angles))) |
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;; or using complex numbers (cis and phase) |
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(defun mean-angle-2 (angles) |
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(degrees (phase (reduce #'+ angles :key (lambda (deg) (cis (radians deg))))))) |
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</lang> |
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{{out}} |
{{out}} |
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<pre>The mean angle of (350 10) is -0.00°. |
<pre>The mean angle of (350 10) is -0.00°. |
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