run_analysis.R

This is the only script in this repository. When it is run in a directory containing the appropriate data, it will merge the supplied test sets, extract only the "mean" and "std" measurements, replace the activity IDs with activity names, and create a file called "tidy_data.txt" that contains the average of each variable grouped by activity and subject.

How to Run

• Clone the repository (or simply download the single file run_analysis.R)
• Download the dataset supplied here (https://d396qusza40orc.cloudfront.net/getdata%2Fprojectfiles%2FUCI%20HAR%20Dataset.zip)
• Unzip the dataset into a valid directory
• cd to the directory created... it should be named UCI HAR Dataset
• run the script (Rscript <file_path>/run_analysis.R -- if there are library loading issues you may have better luck just opening the file in Rstudio and running from there, ensuring that you are in the above directory)
• Wait...
• When it is finished there should be a file called tidy_data.txt in the UCI HAR Dataset directory