Remove all zeros from a matrix
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I want to remove all zeros from cells a matrix, so i can use it in a for-loop later on. The structure of the matrix should not change after the zeros are removed. So every row should stay the same, just without the zeros in the cells.
Right now the size of my matrix is 27895x5

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Torsten
2022년 6월 23일
If you remove the zeros, you must replace them by something in order to leave the structure of the matrix unchanged.
Rohit Kulkarni
2022년 6월 23일
You can skip that column in the for-loop.
Rik
2022년 6월 23일
Exact terms matter for your question. Is your data stored in a cell array, or in a (double) matrix?
Rik
2022년 6월 24일
The data is stored in a double matrix
Rik
2022년 6월 24일
In that case, Torsten gave you the answer: a double array cannot have empty elements, only cell arrays can.
Rik
2022년 6월 24일
Comments psted as flags by @Moritz Nusser (please don't use flags to post comments, they are meant to attract the attention of site admins):
ok, so which kind of removement would you choose so that the "for-loop" won't create error mistakes ?
Thank your for your fast response ! Is it possible to use cell arrays for calculations in a for loop ?
Rik
2022년 6월 24일
If you have trouble with Matlab basics you may consider doing the Onramp tutorial (which is provided for free by Mathworks). That will teach you how to work with cell arrays.
답변 (1개)
Karan Kannoujiya
2022년 6월 24일
0 개 추천
Hi moritz,
If you want to remove zero from a cell then you will have remove that row also otherwise it will not remain a matrix structure.
for removing any row you can do--->
tableName(rowNumber,:)=[ ];
I would suggest you to go through this Matlab Onramp course it just an 2 hours course you will understand everything
link-->
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Adam Danz
2022년 6월 24일
Note that column 5 of the image in the question contains all 0s so this proposal would potentially eliminate all of the data.
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도움말 센터 및 File Exchange에서 Creating and Concatenating Matrices에 대해 자세히 알아보기
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