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

7 Kommentare
Torsten
am 23 Jun. 2022
If you remove the zeros, you must replace them by something in order to leave the structure of the matrix unchanged.
Rohit Kulkarni
am 23 Jun. 2022
You can skip that column in the for-loop.
Rik
am 23 Jun. 2022
Exact terms matter for your question. Is your data stored in a cell array, or in a (double) matrix?
Rik
am 24 Jun. 2022
The data is stored in a double matrix
Rik
am 24 Jun. 2022
In that case, Torsten gave you the answer: a double array cannot have empty elements, only cell arrays can.
Rik
am 24 Jun. 2022
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
am 24 Jun. 2022
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.
Antworten (1)
Karan Kannoujiya
am 24 Jun. 2022
0 Stimmen
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-->
1 Kommentar
Adam Danz
am 24 Jun. 2022
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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