Is there a function to turn ?x2 matrix of coordinates of vertices of a polygon into a ?x4 matrix of coordinates of line segments of that polygon?
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Is there a function to turn a matrix of vertices of a polygon like this [2, 4; 5, 6; 6, 6; 8,5] into a matrix of line segments of that polygon like this [2, 4, 5, 6; 5, 6, 6, 6; 6, 6, 8, 5; 8, 5, 2, 4]?
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Stephan
2019 年 12 月 4 日
Yes,
circshift will do the job:
A = [2, 4; 5, 6; 6, 6; 8,5]
B = [2, 4, 5, 6; 5, 6, 6, 6; 6, 6, 8, 5; 8, 5, 2, 4]
% The solution:
C = [A circshift(A,-1)]
% The test:
A =
2 4
5 6
6 6
8 5
B =
2 4 5 6
5 6 6 6
6 6 8 5
8 5 2 4
C =
2 4 5 6
5 6 6 6
6 6 8 5
8 5 2 4
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