this is part of the course project from Getting and Cleaning Data course on Coursera https://www.coursera.org/learn/data-cleaning
the script run_analysis.R
does the following steps:
- Download a data set from https://d396qusza40orc.cloudfront.net/getdata%2Fprojectfiles%2FUCI%20HAR%20Dataset.zip and unzip the file
- Load all features and extract only mean and std variables from the data set
- Load a train data set and test data set, then merge them into one data set
- Label variables in the merged data set
- Create a tidy data set with the average of each variable for each activity and each subject
- Write the tidy data set to
tidy.txt
file