edges.csv

In GeoPressureR, we uses edges (of a graph; See more infomration on the movement model in the GeoPressureManual) to extract flight information from GeoPressureP paths using path2edge().

Edges

Source: edges-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_s`*	Identifier of the SOURCE stationary period. Foreign key to `staps.stap_id` Constraints required: `true` Example: `3`	number
`stap_t`*	Identifier of the TARGET stationary period. Generally `stap_s+1` exept if `include=FALSE` for intermediate stap_id. Foreign key to `staps.stap_id`. Constraints required: `true` Example: `4`	number
`lat_s`*	Latitude of source the stationay period. Constraints required: `true` minimum: `-90` maximum: `90` Example: `52.70442` Same as http://rs.tdwg.org/dwc/terms/decimalLatitude	number
`lon_s`*	Longitude of the source stationay period. Constraints required: `true` minimum: `-180` maximum: `180` Example: `23.84995` Same as http://rs.tdwg.org/dwc/terms/decimalLongitude	number
`lat_t`*	Latitude of the target stationay period. Constraints required: `true` minimum: `-90` maximum: `90` Example: `52.70442` Same as http://rs.tdwg.org/dwc/terms/decimalLatitude	number
`lon_t`*	Longitude of the target stationay period. Constraints required: `true` minimum: `-180` maximum: `180` Example: `23.84995` Same as http://rs.tdwg.org/dwc/terms/decimalLongitude	number
`s`	Index of the 2D coordinate of the source stap. See `paths.ind` for more information Constraints required: `false` minimum: `1` Example: `23343`	integer
`t`	Index of the 2D coordinate of the target stap. See `paths.ind` for more information Constraints required: `false` minimum: `1` Example: `23343`	integer
`j`	Unique identifier for each simulated trajectory, integer from `1` to `nj` as defined in `GeoPressureR::graph_simulation()``. Constraints required: `false` minimum: `1` Example: `1`	integer
`start`*	Date and time of the start of the flight. Formatted as an ISO 8601 string with timezone designator `YYYY-MM-DDThh:mm:ssZ`. Constraints required: `true` Example: `2020-04-01T05:50:00Z` Close to http://vocab.nerc.ac.uk/collection/MVB/current/MVB000200	datetime
`end`*	Date and time of the end of the flight. Formatted as an ISO 8601 string with timezone designator `YYYY-MM-DDThh:mm:ssZ`. Constraints required: `true` Example: `2020-04-02T21:18:00Z` Close to http://vocab.nerc.ac.uk/collection/MVB/current/MVB000200	datetime
`n`	Number of flight. Constraints required: `false` minimum: `1` Example: `1`	integer
`distance`	distance of the flight in km. Constraints required: `false` minimum: `0` Example: `235`	number
`bearing`	Direction of the flight in degree. 0 indicates north, positive indicate eastward direction, and negative indicate westward direction. Constraints required: `false` minimum: `-180` maximum: `180` Example: `30`	number
`gs_u`	The average groundspeed of the entire flight along the longitudinal axis (east-west direction), measured in kilometers per hour (km/h). Constraints required: `false` Example: `35.5`	number
`gs_v`	The average groundspeed of the entire flight along the latitudinal axis (north-south direction), measured in kilometers per hour (km/h). Constraints required: `false` Example: `45.1`	number
`ws_u`	The average windspeed of the entire flight along the longitudinal axis (east-west direction), measured in kilometers per hour (km/h). Constraints required: `false` Example: `15.1`	number
`ws_v`	The average windspeed of the entire flight along the latitudinal axis (north-south direction), measured in kilometers per hour (km/h). Constraints required: `false` Example: `5.5`	number