This assignment uses dataset from the .
The script is work as following:
- Download and unzip all neccessary files in the working directory.
- All train and test sets data is merged. Some columns are renamed underline.
- From file features.txt is selected only features that contains following patterns: -mean() or -std(). Other features are supposed no to be appropriate.
- Activities are renamed using naming conventions from activity_labels.txt
- For making variables naming descriptive all unappopriate symbols are removed
- Tidy dataset is obtained from previous step as average of each variable for each activity and each subject.
Script require dplyr library.