Extracting a 2 dimensional array from a 3 dimensional matrix.

I have a 3D matrix named SM of order 17x10x181. I need to extract a 2D matrix from SM of order 10x181. What should be the command?

Answer 1

[Walter Roberson]

squeeze(SM(5,:,:))

For example. Without the squeeze it would be a 1 x 10 x 181 and the squeeze makes it 10 x 181

[onur erdem korkmaz]

Thank you for your answer. I want to ask an additional question. How do I add two matrices (10x81 add to another 10x81 in 17x10x81) with no for loop. (10x81 + 10x81 = 10x162)

[Walter Roberson]

[squeeze(SM(I, :, :), squeeze(SM(J,:,:))]

or

reshape( permute(SM([I, J], :, :), [2 3 1]), size(SM,2), [] )

Here [I, J] could be replaced by a vector of values to end up with a 10 x (81*n) array.

Answer 2

[KL]

use squeeze,

 a = squeeze(yourmatrix(1,:,:))

first row from all pages. I suggest reading the doc page of squeeze.

[Werner Barros]

Thank you so much