Skip to content

Latest commit

 

History

History
97 lines (86 loc) · 2.73 KB

codeBook.md

File metadata and controls

97 lines (86 loc) · 2.73 KB

Code Book

Description

This code book describes a processed smartphone data set that describes the accelerometer and gyroscope data of each individual and their activity.

The original dataset can be retrieved from https://d396qusza40orc.cloudfront.net/getdata%2Fprojectfiles%2FUCI%20HAR%20Dataset.zip

The description of the original data set can be obtained from http://archive.ics.uci.edu/ml/datasets/Human+Activity+Recognition+Using+Smartphones.

Output Data Set Descriptions

Subject ID

  • Column Number: 1
  • Column Label: "Subject"
  • Missing Data Code: NA
  • Data Type: Positive Integer
  • Value: 1 to 30

Activity Label

  • Column Number: 2
  • Column Label: "Activity"
  • Missing Data Code: ""
  • Data Type: String
  • Value: "LAYING", "SITTING", "STANDING", "WALKING", "WALKING UPSTAIRS", "WALKING DOWNSTAIRS"

Column 3 to 68 are the average value of the following measurements in order (the number denote the column number of the variable):

  1. tBodyAcc-mean-X
  2. tBodyAcc-mean-Y
  3. tBodyAcc-mean-Z
  4. tBodyAcc-std-X
  5. tBodyAcc-std-Y
  6. tBodyAcc-std-Z
  7. tGravityAcc-mean-X
  8. tGravityAcc-mean-Y
  9. tGravityAcc-mean-Z
  10. tGravityAcc-std-X
  11. tGravityAcc-std-Y
  12. tGravityAcc-std-Z
  13. tBodyAccJerk-mean-X
  14. tBodyAccJerk-mean-Y
  15. tBodyAccJerk-mean-Z
  16. tBodyAccJerk-std-X
  17. tBodyAccJerk-std-Y
  18. tBodyAccJerk-std-Z
  19. tBodyGyro-mean-X
  20. tBodyGyro-mean-Y
  21. tBodyGyro-mean-Z
  22. tBodyGyro-std-X
  23. tBodyGyro-std-Y
  24. tBodyGyro-std-Z
  25. tBodyGyroJerk-mean-X
  26. tBodyGyroJerk-mean-Y
  27. tBodyGyroJerk-mean-Z
  28. tBodyGyroJerk-std-X
  29. tBodyGyroJerk-std-Y
  30. tBodyGyroJerk-std-Z
  31. tBodyAccMag-mean
  32. tBodyAccMag-std
  33. tGravityAccMag-mean
  34. tGravityAccMag-std
  35. tBodyAccJerkMag-mean
  36. tBodyAccJerkMag-std
  37. tBodyGyroMag-mean
  38. tBodyGyroMag-std
  39. tBodyGyroJerkMag-mean
  40. tBodyGyroJerkMag-std
  41. fBodyAcc-mean-X
  42. fBodyAcc-mean-Y
  43. fBodyAcc-mean-Z
  44. fBodyAcc-std-X
  45. fBodyAcc-std-Y
  46. fBodyAcc-std-Z
  47. fBodyAccJerk-mean-X
  48. fBodyAccJerk-mean-Y
  49. fBodyAccJerk-mean-Z
  50. fBodyAccJerk-std-X
  51. fBodyAccJerk-std-Y
  52. fBodyAccJerk-std-Z
  53. fBodyGyro-mean-X
  54. fBodyGyro-mean-Y
  55. fBodyGyro-mean-Z
  56. fBodyGyro-std-X
  57. fBodyGyro-std-Y
  58. fBodyGyro-std-Z
  59. fBodyAccMag-mean
  60. fBodyAccMag-std
  61. fBodyBodyAccJerkMag-mean
  62. fBodyBodyAccJerkMag-std
  63. fBodyBodyGyroMag-mean
  64. fBodyBodyGyroMag-std
  65. fBodyBodyGyroJerkMag-mean
  66. fBodyBodyGyroJerkMag-std

All these variables are of numeric data type, which can be positive or negative.