The source data is from UCI's Machine Learning Repository
http://archive.ics.uci.edu/ml/datasets/Human+Activity+Recognition+Using+Smartphones http://archive.ics.uci.edu/ml/machine-learning-databases/00240/UCI%20HAR%20Dataset.zip
The data transformations are fully defined in the run_analysis.R script.
Only mean and standard deviation measurement columns are selectd. Data is grouped by Activity and Subject and the aggregated mean are presented.
Note: Only aggregated mean are presented in the table.
Names have been somewhat simplified from their original form:
Special characters have been replaced with '.'
Multiple '.' characters have been replaced by a single '.'
Any trailing '.' characters have been removed
One corection has been made to the names. Some of the original feature names have BodyBody instead of Body:
516 fBodyBodyAccJerkMag-mean()
517 fBodyBodyAccJerkMag-std()
518 fBodyBodyAccJerkMag-mad()
...
This has been corrected to a single 'Body'.
The final field names are:
activity
subject
tBodyAcc.mean.X
tBodyAcc.mean.Y
tBodyAcc.mean.Z
tBodyAcc.std.X
tBodyAcc.std.Y
tBodyAcc.std.Z
tGravityAcc.mean.X
tGravityAcc.mean.Y
tGravityAcc.mean.Z
tGravityAcc.std.X
tGravityAcc.std.Y
tGravityAcc.std.Z
tBodyAccJerk.mean.X
tBodyAccJerk.mean.Y
tBodyAccJerk.mean.Z
tBodyAccJerk.std.X
tBodyAccJerk.std.Y
tBodyAccJerk.std.Z
tBodyGyro.mean.X
tBodyGyro.mean.Y
tBodyGyro.mean.Z
tBodyGyro.std.X
tBodyGyro.std.Y
tBodyGyro.std.Z
tBodyGyroJerk.mean.X
tBodyGyroJerk.mean.Y
tBodyGyroJerk.mean.Z
tBodyGyroJerk.std.X
tBodyGyroJerk.std.Y
tBodyGyroJerk.std.Z
tBodyAccMag.mean
tBodyAccMag.std
tGravityAccMag.mean
tGravityAccMag.std
tBodyAccJerkMag.mean
tBodyAccJerkMag.std
tBodyGyroMag.mean
tBodyGyroMag.std
tBodyGyroJerkMag.mean
tBodyGyroJerkMag.std
fBodyAcc.mean.X
fBodyAcc.mean.Y
fBodyAcc.mean.Z
fBodyAcc.std.X
fBodyAcc.std.Y
fBodyAcc.std.Z
fBodyAccJerk.mean.X
fBodyAccJerk.mean.Y
fBodyAccJerk.mean.Z
fBodyAccJerk.std.X
fBodyAccJerk.std.Y
fBodyAccJerk.std.Z
fBodyGyro.mean.X
fBodyGyro.mean.Y
fBodyGyro.mean.Z
fBodyGyro.std.X
fBodyGyro.std.Y
fBodyGyro.std.Z
fBodyAccMag.mean
fBodyAccMag.std
fBodyAccJerkMag.mean
fBodyAccJerkMag.std
fBodyGyroMag.mean
fBodyGyroMag.std
fBodyGyroJerkMag.mean
fBodyGyroJerkMag.std