geovec-package: Geographic Vector (points, lines, polygons) data manipulation
In geovec: Manipulation of geographic vector (points, lines, polygons) data

Description

The geovec package has functions to manipulate geographic vector data. It builds on the functionality provided by the rgeos package. rgeos has functions to manipulate geometries ("spatial features"). geovec makes it easier to do for complex polygons with attribute data. Attribute data are kept, or combined. It might be that some of these functions will become obsolete as rgeos develops.

Comparison of terminology for polygon manipulation methods used in ArcGIS and in this package (geovec)

	ArcGIS	raster
	Erase	erase or "-"
	Identity	ident
	Intersect	intersect
	Union	union or "+"
	Update	update
	Symmetrical Difference	symdif
	Append	combine
	Dissolve	aggregate
	Explode	disaggregate
	Join table	merge
	Clip	crop or "*"
	Select	select
	"i"	click