title: Loading multiple files into matrix using R
body: <p>I am new to the programming world and need help with loading a file to R and creating a matrix with it.  I can import individual files and create and individual matrix out of it.  How do I do this for multiple files?  I have 21 files that each contain 100 rows and 100 columns and I need to import each file and put everything in a single array.   </p>