lets.shFilter: Filter species' shapefiles based on its presence, origin, and...

Description Usage Arguments Details Value Author(s) See Also

View source: R/lets_shpfilter.R

Description

Filter species shapefiles by origin, presence, and seasonal type (following IUCN types: http://www.iucnredlist.org/technical-documents/spatial-data, see metadata).

Usage

1
lets.shFilter(shapes, presence = NULL, origin = NULL, seasonal = NULL)

Arguments

shapes

Object of class SpatialPolygonsDataFrame (see function readShapePoly to open these files).

presence

A vector with the code numbers for the presence type to be maintained.

origin

A vector with the code numbers for the origin type to be maintained.

seasonal

A vector with the code numbers for the seasonal type to be maintained.

Details

Presence codes: (1) Extant, (2) Probably Extant, (3) Possibly Extant, (4) Possibly Extinct, (5) Extinct (post 1500) & (6) Presence Uncertain.

Origin codes: (1) Native, (2) Reintroduced, (3) Introduced, (4) Vagrant & (5) Origin Uncertain.

Seasonal codes: (1) Resident, (2) Breeding Season, (3) Non-breeding Season, (4) Passage & (5) Seasonal Occurrence Uncertain.

More info in the shapefiles' metadata.

Value

The result is the shapefile(s) filtered according to the selected types. If the filters remove all polygons, the result will be NULL.

Author(s)

Bruno Vilela

See Also

plot.PresenceAbsence

lets.presab

lets.presab.birds


letsR documentation built on Jan. 24, 2018, 6:36 p.m.