In run_analysis.R, you need to replace the variable my_home_path to where the Samsung data directory "UCI HAR Dataset" is located. The script run_analysis.R should also be located inside the Samsung data directory

UCI HAR Dataset

• run_analysis.R
• activity_labels.txt
• features_info.txt
• features.txt
• README.txt
• test (subject_test.txt, X_test.txt, y_test.txt)
• train (subject_train.txt, X_train.txt, y_train.txt)

1. set current directory to where run_analysis.R is located
2. run R command: source("run_analysis.R")
3. tidy data would be written to file tidy_data.txt at directory of what defined in variable my_home_path

Thank you.