[R] Issue writing correct code for Coursera assignment--performing matrix inversion

Samuel Colon
2015-02-19T20:13:32Z

Hello All,

I'm new to this mailing list, so please let me know if I've committed
any
posting faux-pas.

I'm working on an assignment for my Coursera course; please see my code
below in which I have tried to write two functions--to perform the task of
matrix inversion and then caching that data.  My code is below:

makeCacheMatrix <- function(x = matrix()) {

        i <- NULL

        set <- function(y) {

                x <<- y

                i <<- NULL

        }

        get <- function() x

        setinverse <- function(solve) i <<- solve

        getinverse <- function() i

        list(set = set, get = get, setinverse = setinverse,

             getinverse = getinverse)

}



cacheSolve <- function(x, ...) {

        i <- x$getinverse()

        if(!is.null(i)) {

                message("getting cached data")

                return(i)

        }

        data <- i$get()

        i <- solve(data, ...)

        x$setinverse(i)

        i

}

After I create a new matrix, x, and try to run cacheSolve(x), I receive
this error: "attempt to apply non-function."

I'm new to using the <<- operator, so I'm not sure if that's
where my error
is?

Can anyone suggest how I can go about debugging the above code?

Thanks very much,

Sam Colon
Coursera Student

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