staps.csv

A stationary period (stap) is a key concept in the GeoPressureR workflow that discretizes a bird trajectory in time and space. During a single stap, the bird is assumed to remain at the same location (+/- tens of kilometers). flight is the converse of stap, with flight.start corresponding to a stap.end, and vice versa.

stap_id is indexed within each tag_id (it is not globally unique), so the table key is the composite pair (tag_id, stap_id). staps are typically estimated by GeoPressureR::tag_label_stap() based on the 'flight' labels assigned to pressure or acceleration measurements (measurements.label). See the GeoPressureManual for more details.

Stationary periods

Source: staps-table-schema.json

Name Definition Type
tag_id*

Unique identifier of the tag. Foreign key to tags.tag_id.

Constraints
  • required: true

Example: 18LX

 string
stap_id*

Identifier of the stationary period for a given tag_id.

Constraints
  • required: true
  • minimum: 1

Example: 3

 number
start*

Date and time of the start of the stationary period. Formatted as an ISO 8601 string with timezone designator YYYY-MM-DDThh:mm:ssZ.

Constraints
  • required: true

Example: 2020-04-01T05:50:00Z

 datetime
end*

Date and time of the end of the stationary period. Formatted as an ISO 8601 string with timezone designator YYYY-MM-DDThh:mm:ssZ.

Constraints
  • required: true

Example: 2020-04-02T21:18:00Z

 datetime
known_lat

Latitude of the known stationary period. This value is typically assigned by GeoPressureR::tag_set_map().

Constraints
  • required: false
  • minimum: -90
  • maximum: 90

Example: 52.70442

 number
known_lon

Longitude of the known stationary period. This value is typically assigned by GeoPressureR::tag_set_map().

Constraints
  • required: false
  • minimum: -180
  • maximum: 180

Example: 23.84995

 number