How can I store my results from each iteration of a FOR loop?

Question

Franco 2011-2-2

1
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https://ww2.mathworks.cn/matlabcentral/answers/692-how-can-i-store-my-results-from-each-iteration-of-a-for-loop

How can you specify the introduction of a new variable for every iteration of a for loop. For instance, is

phi = [a,b,c,d]
for i = 1:3
    y = [sin(phi(i)),cos(phi(i));sin(phi(i)),cos(phi(i))]
end

I would like the for loop to specify the new variable for each iteration of the for loop, such that

L = [sin(phi(1)),cos(phi(1));sin(phi(1)),cos(phi(1))]
M =[sin(phi(2)),cos(phi(2));sin(phi(2)),cos(phi(2))]
N =[sin(phi(3)),cos(phi(3));sin(phi(3)),cos(phi(3))]

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Answer 1

Oleg Komarov 2011-2-2

3
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https://ww2.mathworks.cn/matlabcentral/answers/692-how-can-i-store-my-results-from-each-iteration-of-a-for-loop#answer_1017

在 MATLAB Online 中打开

Yes, check this out: http://matlab.wikia.com/wiki/FAQ#How_can_I_create_variables_A1.2C_A2.2C....2CA10_in_a_loop.3F

On the other side you could create a [2 x 2 x i] array, i.e. each slice (along the third dimension) is a 2 by 2 matrix evaluated at the i-th value of phi:

% Create phi as a 3d vector (depth vector)
phi(1,1,:) = 1:2;
% Create y
y = [sin(phi),cos(phi);sin(phi),cos(phi)]
y(:,:,1) =
  0.8415    0.5403
  0.8415    0.5403
y(:,:,2) =
  0.9093   -0.4161
  0.9093   -0.4161