How do i turn my 4D matrix into a 3D matrix

I have a 4D matrix which has the dimensions latitude = 360, longitude = 720, time = 27, N = 5. How can I delete the dimension called N and turn the matrix into a 3D matrix?

Answer 1

[SALAH ALRABEEI]

I think you cannot convert 4D matrix into 3D if non of the dimensions is equal one.

If A is of size (100×50×1×20) lon, lat, depth and time. Then you can use this

to remove the fourth dimension
  % 
squeeze(A)