Getting and Cleaning Data Coursera Course

F is the features vector L is the Activity Labels Vector s,x and y are subject_ .txt, X_ .txt and y_ .txt respectively. For Test and Train as well as combined v is the vector that stores the columns with measurements of means and standard deviations x_out is the output vector which has only the measurements on the mean and standard deviation for each measurement x_melt is the melt of x x_cast is the dcast of x