getdata

Repository for my Getting and Cleaning Course Project

run_analysis.R

This script uses the UCI HAR dataset and digests it into two tidy datasets per the specifications of the Course Project.

The script does the following steps:

• Downloads and unzips the UCI HAR dataset to the current directory, if necessary
• Loads the feature info and activity labels
• Creates a dataframe that puts together Subject, Activity, and feature values for both training and test datasets
• Gives that dataframe column names corresponding to names in feature info
• Creates a dataframe that includes only features matching 'mean' or 'std'
• Creates final dataframe (final) that adds acivity labels
• Creates a summary dataframe (sum) that computes means of feature values by activity and subject
• The final tidy dataset (dataframe 'final') is written to CSV file 'final_tidy.txt'
• The summary means dataset (dataframe 'sum') is written to CSV file 'final_tidy_mean.txt"

Codebook.md

Metadata describing the tidy dataset and the tidy summary means dataset.

README.md

(this file)