Getting and Cleaning Data - Project

Source dataset https://d396qusza40orc.cloudfront.net/getdata%2Fprojectfiles%2FUCI%20HAR%20Dataset.zip.

• You should create one R script called run_analysis.R that does the following.
• Merges the training and the test sets to create one data set.
• Extracts only the measurements on the mean and standard deviation for each measurement.
• Uses descriptive activity names to name the activities in the data set
• Appropriately labels the data set with descriptive activity names.
• Creates a second, independent tidy data set with the average of each variable for each activity and each subject.

Notes

• Only vaiables containing mean() & std() are used.
• Requires the plyr & reshape2 packages.
• Assumes the dataset is unzipped in the current directory.

Constructed using the following:

> version
platform       x86_64-apple-darwin12.4.0
arch           x86_64
os             darwin12.4.0
system         x86_64, darwin12.4.0
status
major          3
minor          0.1
year           2013
month          05
day            16
svn rev        62743
language       R
version.string R version 3.0.1 (2013-05-16)
nickname       Good Sport

Running

$ Rscript run_analysis.R

Yields tidy.txt & tidy.mean.txt.