run_analysis.R
This is the explanation of the course project of Getting and Cleaning Data. This document explains what does the R script do step by step.
How the script works
- Download the dataset and read the relevant dataset related to activity, subject and features (details records).
- Combine the datasets in a big one and adding change the labels.
- Select the columns that related to std and mean, and rename the labels to be more meaningful.
- Aggregate the data by calculating the mean of all measures based on subject and activity
- Save the end results to external file tidydata - Getting and Cleaning Data Assignment.txt