Codebook:
General naming scheme:
- t = time
- f = frequency
- body = body motion
- gravity = gravitational motion
- acc = accelerometer
- jerk = signals, derived from accelerometer and angular velocity
- gyro = gyroscope (measures angular velocity)
- mag = magnitude
- mean = mean
- std = standard deviation
- x = x coordinate
- y = y coordinate
- z = z coordinate
Variable Names: "1" "subjects"- numerical code for research subject (1-30) "2" "activity"- Name for type of activity (walking, walking upstairs, walking downstairs, sitting, standing, laying)
"3" "tbodyaccmeanx"- mean body from accelerometer for x coodinate measured in time "4" "tbodyaccmeany"- mean body from accelerometer for y coodinate measured in time "5" "tbodyaccmeanz"- mean body from accelerometer for z coodinate measured in time
"6" "tgravityaccmeanx"- mean gravity from accelerometer for x coodinate measured in time "7" "tgravityaccmeany"- mean gravity from accelerometer for y coodinate measured in time "8" "tgravityaccmeanz"- mean gravity from accelerometer for z coodinate measured in time
"9" "tbodyaccjerkmeanx"- mean body jerk from from accelerometer for x coodinate measured in time "10" "tbodyaccjerkmeany"- mean body jerk from from accelerometer for y coodinate measured in time "11" "tbodyaccjerkmeanz"- mean body jerk from from accelerometer for z coodinate measured in time
"12" "tbodygyromeanx"- mean body angle from gyroscope for x coodinate measured in time "13" "tbodygyromeany"- mean body angle from gyroscope for y coodinate measured in time "14" "tbodygyromeanz"- mean body angle from gyroscope for z coodinate measured in time
"15" "tbodygyrojerkmeanx"- mean body jerk from gyroscope for x coodinate measured in time "16" "tbodygyrojerkmeany"- mean body jerk from gyroscope for y coodinate measured in time "17" "tbodygyrojerkmeanz"- mean body jerk from gyroscope for z coodinate measured in time
"18" "tbodyaccmagmean"- mean magnitude of body from accelerometer for x coodinate measured in time "19" "tgravityaccmagmean"- mean magnitude of from accelerometer from gravity measured in time "20" "tbodyaccjerkmagmean"- mean magnitude of jerk signal from accelerometer from body measured in time "21" "tbodygyromagmean"- mean magnitude of body angle from gyroscope measured in time "22" "tbodygyrojerkmagmean"- mean magnitude of body jerk signal from gyroscope measured in time "23" "fbodyaccmeanx"- mean body from accelerometer of the x coordinate measured in frequency "24" "fbodyaccmeany"- mean body from accelerometer of the y coordinate measured in frequency "25" "fbodyaccmeanz"- mean body from accelerometer of the z coordinate measured in frequency "26" "fbodyaccjerkmeanx"- mean body jerk signal from accelerometer of the x axis measured in frequency "27" "fbodyaccjerkmeany"- mean body jerk signal from accelerometer of the y axis measured in frequency "28" "fbodyaccjerkmeanz"- mean body jerk signal from accelerometer of the z axis measured in frequency "29" "fbodygyromeanx"- mean body from gyroscope of the x axis measured in frequency "30" "fbodygyromeany"- mean body from gyroscope of the y axis measured in frequency "31" "fbodygyromeanz"- mean body from gyroscope of the z axis measured in frequency "32" "fbodyaccmagmean"- mean body magnitiude from accelerometer measured in frequency "33" "fbodybodyaccjerkmagmean"- mean magnitude of body jerk signal from accelerometer measured in frequency "34" "fbodybodygyromagmean"- mean magnitude of body from gyroscope measured in frequency "35" "fbodybodygyrojerkmagmean"- mean magnitude of jerk signal from body from gyroscope measured in frequency "36" "tbodyaccstdx"- standard deviation of mean body from accelerometer for x coodinate measured in time "37" "tbodyaccstdy"- standard deviation of body from accelerometer for y coodinate measured in time "38" "tbodyaccstdz"- standard deviation of body from accelerometer for z coodinate measured in time
(39-68: descriptions same as 3-38. but standard deviation instead of mean) "39" "tgravityaccstdx"- "40" "tgravityaccstdy"- "41" "tgravityaccstdz"- "42" "tbodyaccjerkstdx"- "43" "tbodyaccjerkstdy"- "44" "tbodyaccjerkstdz"- "45" "tbodygyrostdx"- "46" "tbodygyrostdy"- "47" "tbodygyrostdz"- "48" "tbodygyrojerkstdx"- "49" "tbodygyrojerkstdy"- "50" "tbodygyrojerkstdz"- "51" "tbodyaccmagstd"- "52" "tgravityaccmagstd"- "53" "tbodyaccjerkmagstd"- "54" "tbodygyromagstd"- "55" "tbodygyrojerkmagstd"- "56" "fbodyaccstdx"- "57" "fbodyaccstdy"- "58" "fbodyaccstdz"- "59" "fbodyaccjerkstdx"- "60" "fbodyaccjerkstdy"- "61" "fbodyaccjerkstdz"- "62" "fbodygyrostdx"- "63" "fbodygyrostdy"- "64" "fbodygyrostdz"- "65" "fbodyaccmagstd"- "66" "fbodybodyaccjerkmagstd"- "67" "fbodybodygyromagstd"- "68" "fbodybodygyrojerkmagstd"-