Added check if MASS package is installed

andonman · andonman · commit bef8420d5ee5 · 2014-04-14T12:31:50.000+02:00
diff --git a/cachematrix.R b/cachematrix.R
@@ -1,3 +1,16 @@
+i## First check if MASS package is installed
+
+if (!is.element('MASS', installed.packages()[,1])) 
+{
+    install.packages('MASS')
+    }
+    else
+    {
+        print ("MASS package already installed")
+	}
+	library(MASS)
+
+
 ## Put comments here that give an overall description of what your
 ## functions do
 
