Question

MATLAB

Create a 2 × 3 matrix variable mat. Pass this matrix variable to each of the following functions and make sure you understand the result: flip, fliplr, flipud, and rot90. In how many different ways can you reshape it?

Note: (in addition to the functions listed, rotate the matrix 180 degrees clockwise)

Answer 1

Creating a random 2x3 matrix.  
    command: mat = rand(2,3)*10

    output:

   2.9948   7.6017   5.7173
   4.9625   1.2664   1.7056

   Now applying different commands as given in the problem.

     command: flip(mat) -> flips rows (row 1 in place of row 2 and vice- versa)

      output:

     4.9625       1.2664      1.7056

   2.9948   7.6017   5.7173

    command: fliplr(mat) -> flips left most column with the right most column

      output:

     5.7173       7.6017     2.9948

   1.7056   1.2664   4.9625

  

    command: flipud(mat) -> flips up and down, here same as flip(mat)

      output:

     4.9625       1.2664      1.7056

   2.9948   7.6017   5.7173

     command: rot90(mat) -> rotated mat by 90 degrees in counterclockwise direction

      output:    

   5.7173   1.7056
   7.6017   1.2664
   2.9948   4.9625

     Rotating matrix by 180 degrees in clockwise:
     commands : fliplr(flip(mat))

      output:

     1.7056      1.2664       4.9625

   5.7173   7.6017   2.9948