twilights.csv

Table containing twilight data inferred from light data for all tags. Twilight data is typically computed with GeoPressureR::twilight_create().

Twilights

Source: twilights-table-schema.json

  • Foreign key: tag_id → tags.tag_id
  • Missing values: an empty cell, NA.
  • Other columns: only the columns listed below are allowed. Any column may be left out.
  • Required columns: those marked * must be present and must hold a value in every row, whatever the rule above allows.
Name Definition Type
tag_id*

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

Example: 18LX

 string
twilight*

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

Example: 2020-04-01T22:00:00Z

 datetime
rise*

Boolean value to indicate if the twilight is a sunrise (true) or sunset (false).

Example: true

 boolean
label

Labeling of twilight data according to the GeoPressureManual. The value discard indicates that the twilight should not be used for geopositioning. Any other value can be used without affecting the workflow; setting it to stap_id typically helps visualize which twilights belong to the same stationary period in the training set.

Example: discard

 string