convert a 10x2 matrix into x,y coordinates

>> M = [1,2;3,4;5,6]
M =
  1  2
  3  4
  5  6
>> V = 1:size(M,1);
>> fprintf('(x%d,y%d)=(%d,%d)\n',[V;V;M.'])
(x1,y1)=(1,2)
(x2,y2)=(3,4)
(x3,y3)=(5,6)

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Sirvan Ahmadi 2022-12-14

What if we only want to have,

(1,2)

(3,4)

(5,6)

Stephen23 2022-12-14

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"What if we only want to have"

M = [1,2;3,4;5,6]
M = 3×2
     1     2
     3     4
     5     6
fprintf('(%d,%d)\n',M.')
(1,2)
(3,4)
(5,6)

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Answer 2

Steven Lord 2019-8-7

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https://ww2.mathworks.cn/matlabcentral/answers/475197-convert-a-10x2-matrix-into-x-y-coordinates#answer_386597

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If you are trying to create twenty individual variables, one for each element of your 10-by-2 matrix, DON'T DO THAT. See this Answers post for a lengthy discussion of why this is strongly discouraged.

In my opinion, turning that one variable into two (to make it easier to refer to the X and Y coordinates separately) seems reasonable.

A = [1 2;3 4;5 6];
x = A(:, 1);
y = A(:, 2);

With this approach, what you called x2 would instead be x(2). Or you could use the whole vector at once.

plot(x, y) % Shorter than but equivalent to
plot(A(:, 1), A(:, 2))

But the proliferation of variables from one to twenty-one (the twenty new ones plus the original one) is just going to clutter your workspace. Consider: if you had a 10000-by-2 matrix instead of a 10-by-2, do you want to search through twenty thousand variables in your workspace to access the piece of data you need?