Anatomy of an R Chart Script

In this post, I examine an R script to show how to:  1) Read dynamic data from a web site text file, 2) Determine number of data rows in file; 3) Determine date of last measurement, 4) Create dynamic  title; 5) Bank to 45, and 6) Create an XY Plot. Excel users are encouraged to dust off their R program and try this script on your own PC. Links to the source data and script are provided.