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CodeBook.txt
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Code Book Feature Description
=============================
Signal domain description
-------------------------
Time: Time domain
Frequency: Frequency domain
Signal description
-------------------------
Acc: Accelerometer that measures linear acceleration
Gyro: Gyroscope that measures angular acceleration
Body: Body
Gravity: Gravity
Jerk: Jerk signal
Mag: Magnitude of signal
Vector direction
-------------------------
X: X-direction
Y: Y-direction
Z: Z-direction
Calculated variables
-------------------------
Mean: Mean value
Std: Standard deviation
MeanFreq: Weighted average of the frequency components to obtain a Mean frequency
Angle: Angle between two vectors.
NB:
The complete list of variables, and more detail meaning of each feature vector is available in "features_info.txt"
The variables are ordered in agreement with appearance in the column of data set.
==============================================================================================================
VARIABLES of "NewTidyData.txt"
==============================================================================================================
1. subject:
1 to 30: Volunteer ID number from 1 to 30
2. activity:
Six Physical activities executed and monitored from Volunteers
walking: volunteer walking
walkingupstairs: volunteer walking upstairs
walkingdownstairs: volunteer walking downstairs
sitting: volunteer sitting
standing: volunteer standing
laying: volunteer laying
3. TimeBodyAccMeanX:
Mean of signal in time domain of body acceleration in X-direction.
4. TimeBodyAccMeanY:
Mean of signal in time domain of body acceleration in Y-direction.
5. TimeBodyAccMeanZ:
Mean of signal in time domain of body acceleration in Z-direction.
6. TimeGravityAccMeanX:
Mean of signal in time domain of gravity acceleration in X-direction.
7. TimeGravityAccMeanY:
Mean of signal in time domain of gravity acceleration in Y-direction.
8. TimeGravityAccMeanZ:
Mean of signal in time domain of gravity acceleration in Z-direction.
9. TimeBodyAccJerkMeanX:
Mean of Jerk signal in time domain of body acceleration in X-direction.
10. TimeBodyAccJerkMeanY:
Mean of Jerk signal in time domain of body acceleration in Y-direction.
11. TimeBodyAccJerkMeanZ:
Mean of Jerk signal in time domain of body acceleration in Z-direction.
12. TimeBodyGyroMeanX:
Mean of signal in time domain of body angular acceleration in X-direction.
13. TimeBodyGyroMeanY:
Mean of signal in time domain of body angular acceleration in Y-direction.
14. TimeBodyGyroMeanZ:
Mean of signal in time domain of body angular acceleration in Z-direction.
15. TimeBodyGyroJerkMeanX:
Mean of Jerk signal in time domain of body angular acceleration in X-direction.
16. TimeBodyGyroJerkMeanY:
Mean of Jerk signal in time domain of body angular acceleration in Y-direction.
17. TimeBodyGyroJerkMeanZ:
Mean of Jerk signal in time domain of body angular acceleration in Z-direction.
18. TimeBodyAccMagMean:
Mean of signal magnitude in time domain of body acceleration.
19. TimeGravityAccMagMean:
Mean of signal magnitude in time domain of gravity acceleration.
20. TimeBodyAccJerkMagMean:
Mean of Jerk signal magnitude in time domain of body acceleration.
21. TimeBodyGyroMagMean:
Mean of signal magnitude in time domain of body angular acceleration.
22. TimeBodyGyroJerkMagMean:
Mean of Jerk signal magnitude in time domain of body angular acceleration.
23. FrequencyBodyAccMeanX:
Mean of signal in frequency domain of body acceleration in X-direction.
24. FrequencyBodyAccMeanY:
Mean of signal in frequency domain of body acceleration in Y-direction.
25. FrequencyBodyAccMeanZ:
Mean of signal in frequency domain of body acceleration in Z-direction.
26. FrequencyBodyAccMeanFreqX:
Weighted average of the frequency components in frequency domain of body acceleration in X-direction.
27. FrequencyBodyAccMeanFreqY:
Weighted average of the frequency components in frequency domain of body acceleration in Y-direction.
28. FrequencyBodyAccMeanFreqZ:
Weighted average of the frequency components in frequency domain of body acceleration in Z-direction.
29. FrequencyBodyAccJerkMeanX:
Mean of Jerk signal in frequency domain of body acceleration in X-direction.
30. FrequencyBodyAccJerkMeanY:
Mean of Jerk signal in frequency domain of body acceleration in Y-direction.
31. FrequencyBodyAccJerkMeanZ:
Mean of Jerk signal in frequency domain of body acceleration in Z-direction.
33. FrequencyBodyAccJerkMeanFreqX:
Weighted average of the frequency components of Jerk signal in frequency domain of body acceleration in X-direction.
33. FrequencyBodyAccJerkMeanFreqY:
Weighted average of the frequency components of Jerk signal in frequency domain of body acceleration in Y-direction.
34. FrequencyBodyAccJerkMeanFreqZ:
Weighted average of the frequency components of Jerk signal in frequency domain of body acceleration in Z-direction.
35. FrequencyBodyGyroMeanX:
Mean of signal in frequency domain of body angular acceleration in X-direction.
36. FrequencyBodyGyroMeanY:
Mean of signal in frequency domain of body angular acceleration in Y-direction.
37. FrequencyBodyGyroMeanZ:
Mean of signal in frequency domain of body angular acceleration in Z-direction.
38. FrequencyBodyGyroMeanFreqX:
Weighted average of the frequency components of signal in frequency domain of body angular acceleration in X-direction.
39. FrequencyBodyGyroMeanFreqY:
Weighted average of the frequency components of signal in frequency domain of body angular acceleration in Y-direction.
40. FrequencyBodyGyroMeanFreqZ:
Weighted average of the frequency components of signal in frequency domain of body angular acceleration in Z-direction.
41. FrequencyBodyAccMagMean:
Mean of signal magnitude in frequency domain of body acceleration.
42. FrequencyBodyAccMagMeanFreq:
Weighted average of the frequency components of signal magnitude in frequency domain of body acceleration.
44. FrequencyBodyBodyAccJerkMagMean:
Mean of Jerk signal magnitude in frequency domain of body acceleration.
44. FrequencyBodyBodyAccJerkMagMeanFreq:
Weighted average of the frequency components of Jerk signal magnitude in frequency domain of body acceleration.
45. FrequencyBodyBodyGyroMagMean:
Mean of signal magnitude in frequency domain of body angular acceleration.
46. FrequencyBodyBodyGyroMagMeanFreq:
Weighted average of the frequency components of signal magnitude in frequency domain of body angular acceleration.
47. FrequencyBodyBodyGyroJerkMagMean:
Mean of Jerk signal magnitude in frequency domain of body angular acceleration.
48. FrequencyBodyBodyGyroJerkMagMeanFreq:
Weighted average of the frequency components of Jerk signal magnitude in frequency domain of body angular acceleration.
49. AngleTimeBodyAccMeanGravity:
Angle between Mean of signal in time domain of body linear acceleration vector and gravity acceleration vector.
50. AngleTimeBodyAccJerkMeanGravityMean:
Angle between Mean of Jerk signal in time domain of body linear acceleration vector and Mean gravity acceleration vector.
51. AngleTimeBodyGyroMeanGravityMean:
Angle between Mean of signal in time domain of body angular acceleration vector and Mean gravity acceleration vector.
52. AngleTimeBodyGyroJerkMeanGravityMean:
Angle between Mean of Jerk signal in time domain of body angular acceleration vector and Mean gravity acceleration vector.
53. AngleXgravityMean:
Angle between Mean of gravity acceleration vector and X-direction vector.
55. AngleYgravityMean:
Angle between Mean of gravity acceleration vector and Y-direction vector.
55. AngleZgravityMean:
Angle between Mean of gravity acceleration vector and Z-direction vector.
56. TimeBodyAccStdX:
Standard deviation of signal in time domain of body acceleration in X-direction.
57. TimeBodyAccStdY:
Standard deviation of signal in time domain of body acceleration in Y-direction.
58. TimeBodyAccStdZ:
Standard deviation of signal in time domain of body acceleration in Z-direction.
59. TimeGravityAccStdX:
Standard deviation of signal in time domain of gravity acceleration in X-direction.
60. TimeGravityAccStdY:
Standard deviation of signal in time domain of gravity acceleration in Y-direction.
61. TimeGravityAccStdZ:
Standard deviation of signal in time domain of gravity acceleration in Z-direction.
62. TimeBodyAccJerkStdX:
Standard deviation of Jerk signal in time domain of body acceleration in X-direction.
63. TimeBodyAccJerkStdY:
Standard deviation of Jerk signal in time domain of body acceleration in Y-direction.
64. TimeBodyAccJerkStdZ:
Standard deviation of Jerk signal in time domain of body acceleration in Z-direction.
66. TimeBodyGyroStdX:
Standard deviation of signal in time domain of body angular acceleration in X-direction.
66. TimeBodyGyroStdY:
Standard deviation of signal in time domain of body angular acceleration in Y-direction.
67. TimeBodyGyroStdZ:
Standard deviation of signal in time domain of body angular acceleration in Z-direction.
68. TimeBodyGyroJerkStdX:
Standard deviation of Jerk signal in time domain of body acceleration in X-direction.
69. TimeBodyGyroJerkStdY:
Standard deviation of Jerk signal in time domain of body acceleration in Y-direction.
70. TimeBodyGyroJerkStdZ:
Standard deviation of Jerk signal in time domain of body acceleration in Z-direction.
71. TimeBodyAccMagStd:
Standard deviation of signal magnitude in time domain of body acceleration.
72. TimeGravityAccMagStd:
Standard deviation of signal magnitude in time domain of gravity acceleration.
73. TimeBodyAccJerkMagStd:
Standard deviation of Jerk signal magnitude in time domain of body acceleration.
74. TimeBodyGyroMagStd:
Standard deviation of signal magnitude in time domain of body angular acceleration.
75. TimeBodyGyroJerkMagStd:
Standard deviation of Jerk signal magnitude in time domain of body angular acceleration.
77. FrequencyBodyAccStdX:
Standard deviation of signal in frequency domain of body acceleration in X-direction.
77. FrequencyBodyAccStdY:
Standard deviation of signal in frequency domain of body acceleration in Y-direction.
78. FrequencyBodyAccStdZ:
Standard deviation of signal in frequency domain of body acceleration in Z-direction.
79. FrequencyBodyAccJerkStdX
Standard deviation of Jerk signal in frequency domain of body acceleration in X-direction.
80. FrequencyBodyAccJerkStdY
Standard deviation of Jerk signal in frequency domain of body acceleration in Y-direction.
81. FrequencyBodyAccJerkStdZ:
Standard deviation of Jerk signal in frequency domain of body acceleration in Z-direction.
82. FrequencyBodyGyroStdX:
Standard deviation of signal in frequency domain of body angular acceleration in X-direction.
83. FrequencyBodyGyroStdY:
Standard deviation of signal in frequency domain of body angular acceleration in Y-direction.
84. FrequencyBodyGyroStdZ:
Standard deviation of signal in frequency domain of body angular acceleration in Z-direction.
85. FrequencyBodyAccMagStd:
Standard deviation of signal magnitude in frequency domain of body acceleration.
86. FrequencyBodyBodyAccJerkMagStd:
Standard deviation of Jerk signal magnitude in frequency domain of body acceleration.
88. FrequencyBodyBodyGyroMagStd:
Standard deviation of signal magnitude in frequency domain of body angular acceleration.
88. FrequencyBodyBodyGyroJerkMagStd:
Standard deviation of Jerk signal magnitude in frequency domain of body angular acceleration.