pracma (version 1.9.9)

flipdim: Matrix Flipping (Matlab Style)

Description

Flip matrices up and down or left and right; or circulating indices per dimension.

Usage

flipdim(a, dim)
flipud(a)
fliplr(a)
circshift(a, sz)

Arguments

a

numeric or complex matrix

dim

flipping dimension; can only be 1 (default) or 2

sz

integer vector of length 1 or 2.

Value

the original matrix somehow flipped or circularly shifted.

Details

flipdim will flip a matrix along the dim dimension, where dim=1 means flipping rows, and dim=2 flipping the columns.

flipud and fliplr are simply shortcuts for flipdim(a, 1) resp. flipdim(a, 2).

circshift(a, sz) circulates each dimension (should be applicable to arrays).

Examples

a <- matrix(1:12, nrow=3, ncol=4, byrow=TRUE)
flipud(a)
fliplr(a)

circshift(a, c(1, -1))
v <- 1:10
circshift(v, 5)