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Splitting a row matrix to different rows

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Sara
Sara 2021-10-7
评论： Sara 2021-10-7
I have a Matrix as:
A = [1 3 2 4; 3 1 5 0 ];
and I would like to convert it to a matrix like this:
B=[ 1 3; 1 2; 1 4; 3 1; 3 5; 3 0]
I would appreciate any help.
  2 个评论
Jan
Jan 2021-10-7
You forgot to mention the method. There is an infinite number of algorithms to construct a matrix based on another matrix. In your case the number of elements grws from 8 to 12. The chance to guess correctly, what you are looking for, is very small.
Sara
Sara 2021-10-7
Hi Jan,
Despite that I couldn't explain what I want. Your proposed sloution is exactly what I need.
I appreciate it

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Voss
Voss 2021-10-7
Here's one way, if I am interpreting your method correctly:
B = [repelem(A(:,1),size(A,2)-1) reshape(A(:,2:end).',[],1)];

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