How to save a column into separate variables

Question

0 个投票

Hi, I want to save a column of a matriz into five variables, here is my code:

A = [1  0  0  0  -3  0;
1  0  0  -1  0;
0  1  0  -1  0;
0  0  1  -3  0];

I want to have into a, b, c, d and e the fifth column. Something like this:

a = 3
b = 1
c = 1
d = 3

Thank you!

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Answer 1

madhan ravi 2018-10-18

编辑：madhan ravi 2018-10-18

1 个投票

A = [1  0  0  0  -3  0;
     0  1  0  0  -1  0;
     0  0  1  0  -1  0;
     0  0  0  1  -3  0];
 a=A(:,1)
 b=A(:,2)
 c=A(:,3)
 d=A(:,4)
 e=A(:,5)

Stephen23 2018-10-18

编辑：Stephen23 2018-10-18

"I thought that I could put"

[a, b, c, d] = X(:, 5)

Nope. X is one variable, a, b, c, and d are four separate variables.

You could convert X to a cell array and then use a comma separated list:

Z = num2cell(X(:,5));
[a,b,c,d] = Z{:}

But I would recommend just using indexing, exactly as madhan ravi's answer shows.

Thank you very much! Your code is working perfectly.