Code Book

Data Source

Full description for obtained data can be foud at:

http://archive.ics.uci.edu/ml/datasets/Human+Activity+Recognition+Using+Smartphones

Data source:

https://d396qusza40orc.cloudfront.net/getdata%2Fprojectfiles%2FUCI%20HAR%20Dataset.zip

ID Fields

activityId: Id for the activity that the partipant was perfoming during the measuere.
subjectId: Id for the participant.

Statistics IDs

Variables are named as follows:

t: time analisys.
f: frequency analysis.
BodyAcc: Body acceleration.
GravityAcc: Gravity acceleration.
BodyGyroJerk: Body angular velocity.
BodyAccJerk: Body linear acceleration.
Mag: Denotes the magnitud of linear acceleration and angular velocity.
mean: Average.
std: Standar deviation.
XYZ' is used to denote 3-axial signals in the X, Y and Z directions.

Mean statistics:Time analysis

tBodyAccmeanX tBodyAccmeanY
tBodyAccmeanZ

tGravityAccmeanX
tGravityAccmeanY
tGravityAccmeanZ

tBodyAccJerkmeanX
tBodyAccJerkmeanY
tBodyAccJerkmeanZ

tBodyGyromeanX
tBodyGyromeanY
tBodyGyromeanZ

tBodyGyroJerkmeanX
tBodyGyroJerkmeanY
tBodyGyroJerkmeanZ

tBodyAccMagmean
tGravityAccMagmean
tBodyAccJerkMagmean tBodyGyroMagmean
tBodyGyroJerkMagmean

Mean statistics:Frequency analysis

fBodyAccmeanX
fBodyAccmeanY
fBodyAccmeanZ

fBodyAccmeanFreqX fBodyAccmeanFreqY
fBodyAccmeanFreqZ

fBodyAccJerkmeanX fBodyAccJerkmeanY
fBodyAccJerkmeanZ

fBodyAccJerkmeanFreqX fBodyAccJerkmeanFreqY
fBodyAccJerkmeanFreqZ

fBodyGyromeanX
fBodyGyromeanY
fBodyGyromeanZ

fBodyGyromeanFreqX
fBodyGyromeanFreqY
fBodyGyromeanFreqZ

fBodyAccMagmean fBodyAccMagmeanFreq
fBodyBodyAccJerkMagmean
fBodyBodyAccJerkMagmeanFreq fBodyBodyGyroMagmean
fBodyBodyGyroMagmeanFreq
fBodyBodyGyroJerkMagmean fBodyBodyGyroJerkMagmeanFreq

Standard Deviation statistics:Time analysis

tBodyAccstdX
tBodyAccstdY
tBodyAccstdZ

tGravityAccstdX
tGravityAccstdY tGravityAccstdZ

tBodyAccJerkstdX
tBodyAccJerkstdY tBodyAccJerkstdZ

tBodyGyrostdX
tBodyGyrostdY
tBodyGyrostdZ

tBodyGyroJerkstdX
tBodyGyroJerkstdY
tBodyGyroJerkstdZ

tBodyAccMagstd
tGravityAccMagstd
tBodyAccJerkMagstd
tBodyGyroMagstd
tBodyGyroJerkMagstd

Standard Deviation statistics: Frequency analysis

fBodyAccstdX
fBodyAccstdY
fBodyAccstdZ

fBodyAccJerkstdX
fBodyAccJerkstdY
fBodyAccJerkstdZ

fBodyGyrostdX
fBodyGyrostdY
fBodyGyrostdZ

fBodyAccMagstd
fBodyBodyAccJerkMagstd
fBodyBodyGyroMagstd
fBodyBodyGyroJerkMagstd

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