Getting-and-Cleaning-Data-Course-Project

Source dataset https://d396qusza40orc.cloudfront.net/getdata%2Fprojectfiles%2FUCI%20HAR%20Dataset.zip.

Constructed using the following:

Running

Runing run_analysis.R in data directory. It does the following:

  • 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 activity names.
  • Creates a second, independent tidy data set with the average of each variable for each activity and each subject.

Notes

  • Only vaiables containing mean() & std() are used.
  • Requires the dplyr packages.
  • Assumes the dataset is unzipped in the current directory.

##outputs:

  • tidydata1.txt # tidy data in step 4
  • tidydata2.txt # tidy data in step 5