The activity is calculated directly from the accelerometer: 3-axis sensors sampled at 64 Hz (13-bit resolution. LBS : 3.9 mg. where 1g = 9.8 m/s2). Every second we compute the average acceleration vector length over the 64 samples: SQRT(accX^2 + accY^2 + accZ^2).
For more details, please see below.
List methods: get
Detail methods: None
This resource works like data but is restricted to datatypes: .
Activity: Signal based on the accelerometer intensity vector.
- Source data: acc
- Method of calculation:
- Highpass at 2.65 Hz on the 3 axis independently
- Vector of acceleration. (accX^2 + accY^2+accZ^2)^.5
- Averaged over the last second
- Frequency: 1 Hz
- Resolution 3.9 mG.
- Dynamic range +- 16G
- Unit G
- Unit (binary download): G/256
Additionally, refer to this documentation for any other metric calculations: https://api.hexoskin.com/docs/index.html#introduction
Keywords: data export, data analysis, activity tracking, API