/getting-cleaning-data

Project assignment of Getting and Cleaning Data in R

Primary LanguageR

Getting and Cleaning Data Course Project

download_data.R

This will download the corpus and extract it in directory named UCI HAR Dataset, if corpus in Not already downloaded.

Download data using:

source('download_data.R')

run_analysis.R

This is main R script that cleans the corpus data.

Task performed:

  • Merge train and test data.
  • Extract data for mean and standard deviation of each measurement.
  • Provides appropriate descriptive names to each activity.
  • Creates a second, independent tidy data set with the average of each variable for each activity and each subject.

How to use run_analysis.R

Make sure corpus data is downloaded and is in directory UCI HAR Dataset, which is in current working directory.

Now execute this:

source('run_analysis.R')

After the completion of execution two new files will be created:

  • tidy_data.txt It contains clean data in raw format.
  • tidy_data.csv It contains clean data in csv format.