Screen Duration

computed from primary feature: cortex.primary.screen_active computed from raw feature: cortex.raw.screen_state

Description

Screen duration is the sum of the time spent with the screen "on".

Optional or required kwargs

• 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.

Data

• timestamp: (int, units: ms) the start time of each bin of size kwargs['resolution'].
• value: (int, units: ms) the screen duration.

Example

cortex.secondary.screen_duration.screen_duration(id="U1234567890", start=1607072400000, end=1609232400001, resolution=86400000)

Output:

{
  'timestamp': 0,
  'duration': 5616000000,
  'resolution': 86400000,
  'data': [
           {'timestamp': 1607072400000, 'value': 63720178},
           {'timestamp': 1607331600000, 'value': None},
                 .
                 .
                 .
           {'timestamp': 1609232400000, 'value': 86218716}
          ]
}