farabi1038 / cleaning_and_getting_the_data Goto Github PK

First ,it will lload necessary packages (reshape2 and data.table)
It will download the dataset if could not find the dataset in directory its working 
Then it will unzip the data that has been downloaded if it is not .
Get  the activity and feature file information
Loads both the training and test datasets, keeping only those columns which contains   mean or standard deviation
Then, the activity and subject data for each dataset will be loaded , and wil be merged those columns with the dataset
Then the two dataset will be merged
Converts the activity and subject columns into factors
Lastly, it will create a tidy dataset that consists of the mean value of each variable for each subject and activity .