How can I randomize cube positions in matlab?

Question

Mint 2021-6-22

0
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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/862450-how-can-i-randomize-cube-positions-in-matlab

编辑： Mint 2021-6-22

I have generated 10 different cube positions in v and now I want to randomize the order of the positions, i.e. the columns, so that I have 10 different orders of v. Unfortunately it doesn't work with the loop and I only get one randomized order in B.

I am grateful for your help!

E=1;                       
N=3;                        
Nsamples=10;
d=randi(N,1,Nsamples);
s=randi(2,1,Nsamples)-1;
v=rand(N,Nsamples);
    for i=1:Nsamples
    v(d(i),i)=s(i);
    end
v=E*v;
plot3(v(1,:),v(2,:),v(3,:),".");
for i=1:10
x = randperm(size(v,2)); % Create list of integers 1:n, in random order, 
                           % where n = num of columns 
B = v(:, x);             % Shuffles columns about, on all rows, to indixes in x

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Answer 1

Alan Stevens 2021-6-22

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https://ww2.mathworks.cn/matlabcentral/answers/862450-how-can-i-randomize-cube-positions-in-matlab#answer_730635

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Like this?

E=1;                       
N=3;                        
Nsamples=10;
d=randi(N,1,Nsamples);
s=randi(2,1,Nsamples)-1;
v=rand(N,Nsamples);
    for i=1:Nsamples
    v(d(i),i)=s(i);
    end
v=E*v;
plot3(v(1,:),v(2,:),v(3,:),".");
n = size(v,2);
B = zeros(3,n,10);
for i = 1:10
x = randperm(n); % Create list of integers 1:n, in random order, 
                           % where n = num of columns 
B(:,1:n,i) = v(:, x);             % Shuffles columns about, on all rows, to indixes in x
end