##The dataset includes the following files:
##- 'README.txt'
##- 'features_info.txt': Shows information about the variables used on the feature vector.
##- 'features.txt': List of all features.
##- 'activity_labels.txt': Links the class labels with their activity name.
##- 'train/X_train.txt': Training set.
##- 'train/y_train.txt': Training labels.
##- 'test/X_test.txt': Test set.
##- 'test/y_test.txt': Test labels.
##The following files are available for the train and test data. Their descriptions are equivalent.
##- 'train/subject_train.txt': Each row identifies the subject who performed the activity for each window sample. Its range is from 1 to 30.
##- 'train/Inertial Signals/total_acc_x_train.txt': The acceleration signal from the smartphone accelerometer X axis in standard gravity units 'g'. Every row shows a 128 element vector. The same description applies for the 'total_acc_x_train.txt' and 'total_acc_z_train.txt' files for the Y and Z axis.
##- 'train/Inertial Signals/body_acc_x_train.txt': The body acceleration signal obtained by subtracting the gravity from the total acceleration.
##- 'train/Inertial Signals/body_gyro_x_train.txt': The angular velocity vector measured by the gyroscope for each window sample. The units are radians/second.
##Notes:
##- Features are normalized and bounded within [-1,1]. ##- Each feature vector is a row on the text file.