There is a growing interest in using devices to capture data about our movement. Jorge L. Reyes-Ortiz, Davide Anguita, Alessandro Ghio, and Luca Oneto at SmartLab ran an experiment where they had subjects go through a series of tests wearing a Samsung Galaxy SII in their hip.
They have released the raw and processed data from these experiments; however, the data is not in an easily understandable nor useable form. This project converts the data into two separate tidy datasets:
tidy-dataset.txtcontains the mean and standard deviation of each measurement for all subjects and tests.tidy-dataset-2.txtcontains the mean measurement for each subject/test combination.
To download and tidy the data, simply run the run_analysis.R script.
Davide Anguita, Alessandro Ghio, Luca Oneto, Xavier Parra and Jorge L. Reyes-Ortiz. Human Activity Recognition on Smartphones using a Multiclass Hardware-Friendly Support Vector Machine. International Workshop of Ambient Assisted Living (IWAAL 2012). Vitoria-Gasteiz, Spain. Dec 2012