Manipulation of high-dimensional arrays in R with the magic package

Overview

The magic package implements functionality for manipulating high-dimensional arrays using efficient vectorised methods. The original application was high-dimensional magic hypercubes. This README shows some of the more useful functions in the package.

Installation

You can install the released version of magic from CRAN with:

# install.packages("magic")  # uncomment this to install the package
library("magic")

Package highlights

• Function adiag() binds arbitrarily-dimensioned arrays corner-to-corner
• Function apad() pads arbitrarily-dimensioned arrays
• Function apldrop() is a replacement for APL’s drop
• Function aplus() superimposes two arrays of different dimensions and returns the sum of overlapping elements
• Function arev() is a multidimensional generalization of rev()
• Function arot() is a generalization of matlab’s rotdim
• Function fnsd() returns the first nonsingleton dimension of an arbitrary dimensioned array
• Function ashift() shifts the origin of arbitrary dimensioned arrays

Much of the package functionality is vectorised in array dimension.

Further information

For more detail, see the package vignette

vignette("magic")