caleidoscope: Caleidoscopic effect on a matrix
In AkselA/R-ymse: Ymse (Various)

Description Usage Arguments Details Value Examples

Flip a matrix vertically and horizontally before recombining into a new large matrix

1	caleidoscope(m, odd = TRUE)

`m`	a matrix
`odd`	logical; should the resulting matrix have odd dimensions?

Three copies of m will be made. One flipped horizontally, one flipped vertically, and one flipped both horizontally and vertically. Then they are recombined with the original matrix in the upper right corner, and the flipped copies in the upper left, lower righ and lower left corners, respectively.

A matrix of either 2× or 2× - 1 the number of rows and columns of the input matrix.

caleidoscope(matrix(1:4, 2), odd=FALSE)

image(caleidoscope(1:9 %o% 1:9))

image(caleidoscope(matrix(runif(180*200)^2, 180)), col=rainbow(256, start=0.58))