Programming assignments for the course "R Programming"

Programming Assignment 1 - Air Pollution For this first programming assignment you will write three functions that are meant to
interact with dataset that accompanies this assignment. The dataset is contained in a zip
file specdata.zip that you can download from the Coursera web site.

Programming Assignment 2 - Lexical Scoping
This second programming assignment will require you to write an R function is able to
cache potentially time-consuming computations. For example, taking the mean of a numeric
vector is typically a fast operation. However, for a very long vector, it may take too
long to compute the mean, especially if it has to be computed repeatedly (e.g. in a loop).
If the contents of a vector are not changing, it may make sense to cache the value of the mean so that when we need it again, it can be looked up in the cache rather than
recomputed. In this Programming Assignment will take advantage of the scoping rules of
the R language and how they can be manipulated to preserve state inside of an R object.

Programming Assignment 3 - Hospital Quality
See the file "rprog-doc-ProgAssignment3.pdf" inside the Assignment 3 directory for more
information about this assignment.