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How to read file .txt?

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Mira le
Mira le on 9 Dec 2019
Commented: Mira le on 10 Dec 2019
I have file .txt contains
1 2
2 3
I want to read the file and put each value 12 , 23 in a cell array
How can I do that
Please help me.
Thanks

  6 Comments

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Mira le
Mira le on 9 Dec 2019
SO how do we make it with matrix?
Adam Danz
Adam Danz on 9 Dec 2019
@Mira le , please take a moment to think about the questions that dpb and Guillaume have asked. They are important.
Do you want this
{12, 23}
or this
{[1,2],[2,3]}
or something else?
If the answer is something else, show us exactly what you're looking for.
Mira le
Mira le on 9 Dec 2019
I mean {[1,2],[2,3]}
If i want to put then in s for example like that
s={[1,2],[2,3]}
s =
1×2 cell array
[1×2 double] [1×2 double]
>> s{1}
ans =
1 2
>> s{2}
ans =
2 3

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Accepted Answer

Adam Danz
Adam Danz on 9 Dec 2019
Edited: Adam Danz on 9 Dec 2019
Assuming your text file is named myTextFile.txt and contains only that matrix,
A = readmatrix('myTextFile.txt'); % for Matlab >= 2019a
%A = dlmread('myTextFile.txt'); % for matlab < r2019a
B= mat2cell(A,[1,1],2).'; % If you want to split the matrix by rows
B= mat2cell(A.',[1,1],2).'; % If you want to split the matrix by columns
In your example it's unclear whether your splitting the matrix by rows or by columns since both result in the same output. Use the 2nd line above to split by rows and the 3rd line to split by columns. Both produce a 1x2 cell containing two 1x2 vectors.
[update]
This version below is more generalizeable in case the size of your matrix changes.
B = mat2cell(A,ones(size(A,1),1),size(A,2)).'; %by row....
B = mat2cell(A.',ones(size(A,2),1),size(A,1)).'; %by column...

  5 Comments

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Mira le
Mira le on 9 Dec 2019
I use 2017a version matlab
Adam Danz
Adam Danz on 9 Dec 2019
dlmread should work for you, then. I'll add your release number to the question details on the right.
Mira le
Mira le on 10 Dec 2019
Thanks

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