Assignment for Coursera class Getting and Cleaning Data
The project is based on accelerometer data in the Human Activity Recognition Using Smartphones Data Set from UCI Smartphone Datasets
run_analysis.R
- Merges training and test datasets into one dataset,
- Extracts the mean and standard deviation for each measurement,
- Labels the data set with activity names,
- Creates a new data set with the average of each variable for each activity and each subject.
The R script run_analysis.R expects the data to be in the directory
./UCI HAR Dataset by default.
In the R console in RStudio
> source('./run_analysis.R')
> run_analysis()
will save the output in the files
./means.txt and ./average.txt (in the working directory)
CodeBook.md
The Code Book describes the data and processing.