Create cachematrix1.R

cachematrix.R

@@ -1,15 +1,61 @@
-## Put comments here that give an overall description of what your
-## functions do
+## Functions that cache the inverse of a matrix
 
-## Write a short comment describing this function
+## This function creates a special "matrix" object that can cache its inverse
+makeCacheMatrix <- function( m = matrix() ) {
 
-makeCacheMatrix <- function(x = matrix()) {
+    ## Initialize the variable for inverse property
+    inv <- NULL
 
-}
+    ## Method to set the matrix
+    set <- function( matrix ) {
+            m <<- matrix
+            inv <<- NULL
+    }
+
+    ## Method to get the matrix
+    get <- function() {
+    	m
+    }
+
+    ## Set the inverse of the matrix
+    setInverse <- function(inverse) {
+        inv <<- inverse
+    }
 
+    ## Get the inverse of the matrix
+    getInverse <- function() {
+        inv
+    }
+
+    ## Return a list of the methods
+    list(set = set, get = get, setInverse = setInverse,
+         getInverse = getInverse)
+}
 
-## Write a short comment describing this function
 
+## This function computes the inverse of the special matrix returned by "makeCacheMatrix" above.
+## If the inverse has already been calculated (and the matrix has not changed),
+## then the "cachesolve" should retrieve the inverse from the cache.
 cacheSolve <- function(x, ...) {
-        ## Return a matrix that is the inverse of 'x'
+
+    ## Return a matrix that is the inverse of 'x'
+    m <- x$getInverse()
+
+    ## Return the inverse if its already set
+    if( !is.null(m) ) {
+            message("Retrieving cached data")
+            return(m)
+    }
+
+    ## Retrieve the matrix from our object
+    var <- x$get()
+
+    ## Calculating the inverse using matrix multiplication
+    m <- solve(var) %*% var
+
+    ## Set the inverse to the object
+    x$setInverse(m)
+
+    ## Return the matrix
+    m
 }