MATLAB Function Reference

rot90

Rotate matrix 90°

Syntax

• B = rot90(A)
  B = rot90(A,k)
  

Description

B = rot90(A) rotates matrix A counterclockwise by 90 degrees.

B = rot90(A,k) rotates matrix A counterclockwise by k*90 degrees, where k is an integer.

Examples

The matrix

• X =
      1    2    3
      4    5    6
      7    8    9
  

rotated by 90 degrees is

• Y = rot90(X)
  Y =
      3    6    9
      2    5    8
      1    4    7
  

See Also

flipdim, fliplr, flipud

rosser

rotate