cachematrix.R

## These functions allow the inverse of a matrix to be put in cache to avoid re-calculation.

## This first function creates a "matrix" which is in fact a list with function to
## set the value of the matrix, set the value of the matrix, set the value of the inverse,
## and get the valeu of the inverse

makeCacheMatrix <- function(x = matrix()) {
    m <- NULL
    set <- function(y) {
        x <<- y
        m <<- NULL
    }
    get <- function() x
    setinverse <- function(solve) m <<- solve
    getinverse <- function() m
    list(set = set, get = get,
         setinverse = setinverse,
         getinverse = getinverse)
}


## This function calculates the inverse of a matrix using the special matrix created above
## It first checks the cache to see if the inverse has already been calculated

cacheSolve <- function(x, ...) {
        ## Return a matrix that is the inverse of 'x'
    m <- x$getinverse()
    if(!is.null(m)) {
        message("getting cached data")
        return(m)
    }
    data <- x$get()
    m <- solve(data, ...)
    x$setinverse(m)
    m
}