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Method of subtracting a number from a three-dimensional matrix

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nada
nada 2020-6-4
评论： KSSV 2020-6-4
Welcome all and thanks in advance for help.
I have a 3D matrix size (300 x 16 x 21), I want to find a loop to subtract the number 1000 from the first column that has 300 rows

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KSSV
KSSV 2020-6-4
编辑：KSSV 2020-6-4
Instead of loop, you can do the following: LEt A be your matrix of size 300x16x21.
A(:,1,:) = A(:,1,:)-1000 ;
  2 个评论
nada
nada 2020-6-4
thank you KSSV
I mean, it works like this example
A( 300x16x21) - 1000= (1-1000 , : , : )
(2-1000, : , : )
*
*
*
(300-1000, : , : )
A(new) = A(300 , 16 ,21 )

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