How can I extract not zero numbers from a matrix?

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Simo 2014-6-24

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评论： Image Analyst 2014-6-24

采纳的回答： Azzi Abdelmalek

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I have a matrix, like

M=[0 1 2 5 2 3 0 0 0 0 4 3 2 5 0 0 0 4 3 2 ...];

I'd like to extract n separated matrices, like:

A=[ 1 2 5 2 3];
B=[ 4 3 2 5];
C=[ 4 3 2];

or a matrix n Columns or rows, like

M=[A;B;C]

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Image Analyst 2014-6-24

You cannot have an M like that because A, B, and C have different numbers of columns.

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Azzi Abdelmalek 2014-6-24

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在 MATLAB Online 中打开

M=[0 1 2 5 2 3 0 0 0 0 4 3 2 5 0 0 0 4 3 2 ];
idx=[0 M~=0 0];
ii1=strfind(idx,[0 1]);
ii2=strfind(idx,[1 0])-1;
out=arrayfun(@(ii,jj) M(ii:jj),ii1,ii2,'un',0);
celldisp(out)

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