appendPosition: Append positions

In StoXProject/RstoxFDA: Fisheries Dependent Analysis with RstoX

Append positions

Description

Appends columns with positions to a data table, based on an area code.

Coordinates are retrieved from a SpatialPolygonsDataFrame and not calculated the exact defintion of the coordinates depend on how the polygons were constructed.

Datum and projection is not enforced, but a warning is issued if 'areaPolygons' does not pass some checks to verify that it is not a planar projection.

Usage

appendPosition(
  table,
  areaPolygons,
  areaName,
  latColName,
  lonColName,
  StratumName = "StratumName"
)

Arguments

table	data.table to be annotated.
areaPolygons	SpatialPolygonsDataFrame
areaName	name of column that identifies the area in 'table'
latColName	name of the latitdue column to be appended to 'table'
lonColName	name of the longitude column to be appended to 'table'
StratumName	name of the column in 'areaPolygons' that identifies the area.

Value

'table' with the positions appended in the columns 'latColName' and 'lonColName'.

StoXProject/RstoxFDA documentation built on Jan. 13, 2024, 12:32 a.m.