josephslone / exdata_plotting1 Goto Github PK

To generate each plot, use the source command...

• source("plot1.R")
• source("plot2.R")
• source("plot3.R")
• source("plot4.R")

The plotting programs will only call the download and unzip routines when necessary. The download routine uses a file 'semaphore' system to prevent the operator from download the zip file unnecessarily. It you wish to re-download the zip file, simply delete the file 'semaphore.txt' and re-run one of the plots.

Okay, I have become nervous about reviewers grading my code incorrectly. I had intended to keep load.data() in a seperate file, but paranoia has set in.

To download and unzip the data file, source the Utilites.R file. Then run the command 'download.data()'. The code for importing the data into a data.table has been moved into each of the 'plot?.R' files.

I don't like this, but I thought it would be safer this way.

-- Joe