Creating sub-matrices using one matrix

Rengin 님이 질문을 제출함. 21 Mar 2014

최근 활동 Thomas 님이 편집함. 21 Mar 2014

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Let's say I have such a matrix:

A=[1 3;2 4;2 5;0 0;4 5;4 7;0 0;5 6;0 0 ] %I want to divide it into submatrices limiting with [0 0]

B=[1 3;2 4;2 5] C=[4 5;4 7] D=[5 6]

Thank you for your time!

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링크

Thomas 님의 답변 21 Mar 2014

Thomas 님이 편집함. 21 Mar 2014

Look at the examples given here http://stackoverflow.com/questions/13091193/how-to-select-a-submatrix-not-in-any-particular-pattern-in-matlab

Another good resource https://ece.uwaterloo.ca/~dwharder/Matlab/indexing.html

Time to learn about indexing..

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Rengin 21 Mar 2014

My question is beyond the extracting randomly rows and columns, meeting a condition to extract sub-matrices limted with [0,0]

Thomas 21 Mar 2014

You could easily find the [0 0] rows and use indexing to get the submatrices..

find(all(A==0,2))
ans =
          4.00
          7.00
          9.00

These are your zero rows .. now index appropriately to create your new sub matrices..

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