yermilov / coursera.getdata-009

Analysys of data collected from the accelerometers from the Samsung Galaxy S smartphone

Data

Here are the data for the project: https://d396qusza40orc.cloudfront.net/getdata%2Fprojectfiles%2FUCI%20HAR%20Dataset.zip

Data description

A full description is available at the site where the data was obtained: http://archive.ics.uci.edu/ml/datasets/Human+Activity+Recognition+Using+Smartphones

Steps to reproduce analysys

• Download data
• Unpack archive
• Place run_analysis.R file in the same folder with 'UCI HAR Dataset' folder.
• Run run_analysis() function.

Analysys description

• 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.
• Return tidy data set with the average of each variable for each activity and each subject.