Code Book
This code book summarizes the resulting data fields in tidy.txt.
Identifiers
subject - The ID of the test subject activity - The type of activity performed when the corresponding measurements were taken Measurements
tBodyAccMeanX tBodyAccMeanY tBodyAccMeanZ tBodyAccStdX tBodyAccStdY tBodyAccStdZ tGravityAccMeanX tGravityAccMeanY tGravityAccMeanZ tGravityAccStdX tGravityAccStdY tGravityAccStdZ tBodyAccJerkMeanX tBodyAccJerkMeanY tBodyAccJerkMeanZ tBodyAccJerkStdX tBodyAccJerkStdY tBodyAccJerkStdZ tBodyGyroMeanX tBodyGyroMeanY tBodyGyroMeanZ tBodyGyroStdX tBodyGyroStdY tBodyGyroStdZ tBodyGyroJerkMeanX tBodyGyroJerkMeanY tBodyGyroJerkMeanZ tBodyGyroJerkStdX tBodyGyroJerkStdY tBodyGyroJerkStdZ tBodyAccMagMean tBodyAccMagStd tGravityAccMagMean tGravityAccMagStd tBodyAccJerkMagMean tBodyAccJerkMagStd tBodyGyroMagMean tBodyGyroMagStd tBodyGyroJerkMagMean tBodyGyroJerkMagStd fBodyAccMeanX fBodyAccMeanY fBodyAccMeanZ fBodyAccStdX fBodyAccStdY fBodyAccStdZ fBodyAccMeanFreqX fBodyAccMeanFreqY fBodyAccMeanFreqZ fBodyAccJerkMeanX fBodyAccJerkMeanY fBodyAccJerkMeanZ fBodyAccJerkStdX fBodyAccJerkStdY fBodyAccJerkStdZ fBodyAccJerkMeanFreqX fBodyAccJerkMeanFreqY fBodyAccJerkMeanFreqZ fBodyGyroMeanX fBodyGyroMeanY fBodyGyroMeanZ fBodyGyroStdX fBodyGyroStdY fBodyGyroStdZ fBodyGyroMeanFreqX fBodyGyroMeanFreqY fBodyGyroMeanFreqZ fBodyAccMagMean fBodyAccMagStd fBodyAccMagMeanFreq fBodyBodyAccJerkMagMean fBodyBodyAccJerkMagStd fBodyBodyAccJerkMagMeanFreq fBodyBodyGyroMagMean fBodyBodyGyroMagStd fBodyBodyGyroMagMeanFreq fBodyBodyGyroJerkMagMean fBodyBodyGyroJerkMagStd fBodyBodyGyroJerkMagMeanFreq Activity Labels
WALKING (value 1): subject was walking during the test WALKING_UPSTAIRS (value 2): subject was walking up a staircase during the test WALKING_DOWNSTAIRS (value 3): subject was walking down a staircase during the test SITTING (value 4): subject was sitting during the test STANDING (value 5): subject was standing during the test LAYING (value 6): subject was laying down during the test