Skip to contents

Set position Biotic

Source: R/StoxBaselineFunctions.R
SetAreaPositionsBiotic.Rd

Sets start position based on area codes. Appropriate when BioticData is read from NMDbiotic.

Usage

SetAreaPositionsBiotic(
  BioticData,
  AreaPosition,
  LocationVariable = c("None", "location"),
  System = character(),
  Overwrite = F
)

Arguments

BioticData

BioticData data for which positions should be set

AreaPosition

coordinates for Area and Location codes, see AreaPosition

LocationVariable

Specify which column in 'BioticData' should are represented by 'Location' in 'AreaPosition'. See details.

System

identifies the area coding system used. Corresonds to the column 'system' on 'fishstation' in 'BioticData'.

Overwrite

if True any existing values in 'latitudestart' and 'longitudestart' will be overwritten. If False postions with both latitude and longitude will be kept as they were.

Value

BioticData

Details

Positions are filled in the columns 'latitudestart' and 'longitudestart' on 'fishstation' whenever the value in the column 'system' on 'fishstation' is equal to the parameter 'System'.

When 'LocationVariable' is specified as 'None' area is looked up from 'AreaPosition', using the row where 'Location' is missing. When 'LocationVariable' is specified as 'location', 'area' and 'location' in 'BioticData' is looked up against 'Area' and 'Location' in 'AreaPosition'.

No modifications are done to rows that have missing values for 'system' or 'area' (or 'location', depending on the parameter 'LocationVariable'). Any rows with areas coded in another system than specified by the parameter 'System' will not be changed.

These columns are on the table 'fishstation' in data originating from NMDBiotic (http://www.imr.no/formats/nmdbiotic/). For bioticdata that does not conform to this, no modifications are done.

See also

DefineAreaPosition for configuring definitions of positions for area codes.