Matrix Reshaping 9x9 to 3x27

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Rahul Marwaha
Rahul Marwaha 2022-10-24
回答： RAGHUNATHRAJU DASHARATHA 2022-10-24
Ran in:
Hi I'm struggling with converting a computed 9 x 9 matrix into the form of a 3x27 matrix. An exmaple of the 9x9 is given below:
8 1 4 7 9 1 2 4 9
6 1 2 7 1 4 8 1 5
5 5 8 5 4 3 6 3 5
9 8 3 1 1 8 5 2 4
3 9 5 3 9 4 2 2 9
7 2 2 9 1 9 8 3 4
7 6 6 2 7 2 6 4 2
4 5 3 8 8 3 4 1 8
6 1 6 5 8 2 5 9 4
A = 9×9
9 8 9 8 4 5 8 2 6 7 5 3 9 5 4 3 2 1 5 6 7 7 1 5 6 7 3 8 6 2 6 7 4 6 1 1 8 8 4 6 1 4 9 9 1 1 7 2 3 9 2 5 7 6 5 1 2 8 5 4 1 3 7 9 1 7 7 6 1 9 8 7 8 6 1 2 4 6 1 5 9
I would like to take the first three values of each column and use that as the columns of the new 3x27 matrix. This would be repeated for all nine values in each column to create a matrix based off the one above to look like:
8 9 7 1 8 6 4 3 6
6 3 4 1 9 5 2 5 3 etc
5 7 6 5 2 1 8 2 6
Any help or guidance would be much appreciated!

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采纳的回答

Arif Hoq
Arif Hoq 2022-10-24
Ran in:
A=[8 1 4 7 9 1 2 4 9
6 1 2 7 1 4 8 1 5
5 5 8 5 4 3 6 3 5
9 8 3 1 1 8 5 2 4
3 9 5 3 9 4 2 2 9
7 2 2 9 1 9 8 3 4
7 6 6 2 7 2 6 4 2
4 5 3 8 8 3 4 1 8
6 1 6 5 8 2 5 9 4];
output=reshape(A(:),3,[])
output = 3×27
8 9 7 1 8 6 4 3 6 7 1 2 9 1 7 1 8 2 2 5 6 4 2 4 9 4 2 6 3 4 1 9 5 2 5 3 7 3 8 1 9 8 4 4 3 8 2 4 1 2 1 5 9 8 5 7 6 5 2 1 8 2 6 5 9 5 4 1 8 3 9 2 6 8 5 3 3 9 5 4 4

更多回答（1 个）

RAGHUNATHRAJU DASHARATHA
Ran in:
As per my understanding you want to convert a 9x9 matric to 3x27 matix.
I will try to explain it using an example below
a=[8 1 4 7 9 1 2 4 9
6 1 2 7 1 4 8 1 5
5 5 8 5 4 3 6 3 5
9 8 3 1 1 8 5 2 4
3 9 5 3 9 4 2 2 9
7 2 2 9 1 9 8 3 4
7 6 6 2 7 2 6 4 2
4 5 3 8 8 3 4 1 8
6 1 6 5 8 2 5 9 4];
b=reshape(a,[3,27])
b = 3×27
8 9 7 1 8 6 4 3 6 7 1 2 9 1 7 1 8 2 2 5 6 4 2 4 9 4 2 6 3 4 1 9 5 2 5 3 7 3 8 1 9 8 4 4 3 8 2 4 1 2 1 5 9 8 5 7 6 5 2 1 8 2 6 5 9 5 4 1 8 3 9 2 6 8 5 3 3 9 5 4 4
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