Could anyone help me how to solve the following issue with respect to the following code

Question

jaah navi 2019-6-3

0
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/465240-could-anyone-help-me-how-to-solve-the-following-issue-with-respect-to-the-following-code

评论： KSSV 2019-6-3

code:

a= [4.7908    5.0104    5.1329    5.3186    5.3094    5.3070    5.4452     5.5001;
    0.0958    0.0994         0         0    0.1848    0.2020    0.1851    0.2146;
    0.0848         0    0.1469    0.1859    0.1767    0.1854    0.1856    0.1648;
         0         0         0         0         0         0         0         0;
         0    0.0896    0.1619    0.1351         0         0         0         0;
         0         0         0         0         0         0         0         0]
for i=1:size(a,2)
b=a(:,1:i)
iwant =  reshape(b(randperm(numel(b))),size(b))
end

with respect to the code in for loop,

when the loop runs for the first time it takes the first column and reshape it and

when the loop runs for the second time it takes the first and second column and reshapes it.

But what i actually need is when the loop runs for the first time by taking the first column,reshape it ,should not be changed when the loop runs for the second time by taking the second column.

Could anyone please help me on it.

0 个评论
显示 -2更早的评论隐藏 -2更早的评论

请先登录，再进行评论。

请先登录，再回答此问题。

Answer 1

KSSV 2019-6-3

0
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/465240-could-anyone-help-me-how-to-solve-the-following-issue-with-respect-to-the-following-code#answer_377568

在 MATLAB Online 中打开

a=[ 4.7908    5.0104    5.1329    5.3186    5.3094    5.3070    5.4452    5.5001;
    0.0958    0.0994         0         0    0.1848    0.2020    0.1851    0.2146;
    0.0848         0    0.1469    0.1859    0.1767    0.1854    0.1856    0.1648;
    0         0         0         0         0         0         0         0;
    0    0.0896    0.1619    0.1351         0         0         0         0;
    0         0         0         0         0         0         0         0]   ;
[m,n] = size(a) ; 
b = a ; 
for i = 1:m
    idx = randperm(n) ; 
    b(i,:) = a(i,idx) ;
end
    