matlab (version 1.0.2)

rot90: MATLAB rot90 function

Description

Rotates matrix counterclockwise k*90 degrees.

Usage

rot90(A, k=1)

Arguments

A

matrix to be rotated

k

numeric scalar specifying the number of times to rotate (1..4)

Value

Returns matrix corresponding to argument A having been rotated argument k number of times.

Details

Rotating 4 times (360 degrees) returns the original matrix unchanged.

See Also

fliplr, flipud

Examples

rot90(matrix(1:4, 2, 2))