Deleting a unit dimension of a matrix

My matrix size is 1*250*500; How can I change this matrix into 250*500.

Answer 1

[Walter Roberson]

squeeze() if you want to delete all unit dimensions (provided that the matrix is at least 3d).

permute() the dimension out of the way if you want to move a specific dimension.

For example,

M = rand(1,250,1,500);
size(squeeze(M))         %gets rid of both 1's, leaving 250 x 500
size(permute(M, [2 3 4 1])  %moves dimension 1 to the fourth dimension, leaving 250 x 1 x 500 x 1 but the trailing 1 is not displayed so 250 x 1 x 500