This is the course project for the Getting and Cleaning Data Coursera course.
The R script, run_analysis.R
, does the following:
- Download the dataset if it does not already exist in the working directory
- Unzip the data
- Load the necessarily libraries
- Read Data :
- Read features and labels data
- read train data
- read test data
- 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 variable names.
- From the data set in step 5, creates a second, independent tidy data set with the average of each variable for each activity and each subject.
The end result is shown in the file tidydata_mean.txt
.