Getting and Cleaning Data Here are the steps that must be performed before running the R script:
Download the zip file from this URL. Unzip the file. Move ALL of the following files to the SAME DIRECTORY as the R script: features.txt subject_train.txt subject_test.txt X_train.txt X_test.txt y_train.txt y_test.txt Once those steps are complete, you can run the R script (run_analysis.R). Note that it requires the reshape2 package, which can be downloaded from CRAN.
The output of the R script is a tidy data set, tidy.csv.
You can read more about the data and the analysis in the code book.