run_analysis.R

source this file to use the 'avgfeature' function

Requirement

• tested with R version 3.5.1 (2018-07-02)
• dplyr

Input

• dir_data: a directory where the UCI HAR Dataset have been extracted
• agg_file: a file name to save the output

Output

• a dataset measurement aggregated over subjects and activities
• a .txt file described in the Codebook.md in your working directory