Nearby Device Count

computed from raw feature: cortex.raw.nearby_device

Description

Nearby device count sums the number of unique nearby bluetooth devices.

Optional or required kwargs

• id: (str) the participant id.
• start: (int, units: ms) the start time.
• end: (int, units: ms) the end time.
• resolution: (int, units: ms) the resolution over which to compute features (1 day = 86400000 ms).

Data

• timestamp: (int, units: ms) the start time of each bin of size kwargs['resolution'].
• value: (int, units: None) the number of unique nearby bluetooth devices.

Example

cortex.secondary.nearby_device_count.nearby_device_count(id="U1753020007", start=1646485947205, end=1647003793838, resolution=86400000)

Output:

{
  'timestamp': 1646485947205,
  'duration': 517846633,
  'resolution': 86400000,
  'data': [
           {'timestamp': 1646485947205, 'value': 3},
           {'timestamp': 1646572347205, 'value': None},
                 .
                 .
                 .
           {'timestamp': 1646831547205, 'value': None}
          ]
}