if i have a matrix and i want check condition if true then copy this row or column to new matrix?

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Firas Al-Kharabsheh 2016-4-15

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https://ww2.mathworks.cn/matlabcentral/answers/279242-if-i-have-a-matrix-and-i-want-check-condition-if-true-then-copy-this-row-or-column-to-new-matrix

评论： Firas Al-Kharabsheh 2016-4-15

if i have a (n,m) matrix A and i want to check condition if true then copy this row or column to new matrix?

 A = [ 1 1 1 0 0 0 0 0 1 1
       1 1 0 0 0 0 0 1 0 1
       1 1 0 0 0 0 0 1 0 1
       1 1 0 0 0 0 0 0 0 1
       1 1 1 0 0 0 0 0 1 1
       1 1 1 1 0 0 0 1 1 1
       1 1 1 1 1 0 1 1 1 1 ]
 the condition is if there a row or a column 
* if the row or the column have a group of one with one zero between them 
* if the number of zero in this row or column < number of ones in this row

if this two condition true then copy this row or column to new zeros matrix

2 个评论
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Azzi Abdelmalek 2016-4-15

Can you post the expected result?

Firas Al-Kharabsheh 2016-4-15

在 MATLAB Online 中打开

s_zeros = [ 1 1 0 0 0 0 0 0 0 1
            1 1 0 0 0 0 0 0 0 1
            1 1 0 0 0 0 0 0 0 1
            1 1 0 0 0 0 0 0 0 1
            1 1 0 0 0 0 0 0 0 1
            1 1 0 0 0 0 0 0 0 1
            1 1 1 1 1 0 1 1 1 1 ]

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Answer 1

Azzi Abdelmalek 2016-4-15

0
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此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/279242-if-i-have-a-matrix-and-i-want-check-condition-if-true-then-copy-this-row-or-column-to-new-matrix#answer_218095

在 MATLAB Online 中打开

A = [ 1 1 1 0 0 0 0 0 1 1
  1 1 0 0 0 0 0 1 0 1
  1 1 0 0 0 0 0 1 0 1
  1 1 0 0 0 0 0 0 0 1
  1 1 1 0 0 0 0 0 1 1
  1 1 1 1 0 0 0 1 1 1
  1 1 1 1 1 0 1 1 1 1 ]
[n,m]=size(A)
s=sum(A,2)
for k=1:n
  idx(k,1)=~isempty(strfind(A(k,:),[1 0 1]))
end
ii=s>m/2 & idx
out=A(ii,:)