aRTlayer-getSetOperation {aRT}R Documentation

Set Operations

Description

Return the result of an operation involving sets (union, intersection, difference and xor). The result has "" as ID.

Usage

## S4 method for signature 'aRTlayer':
getSetOperation(object, operation, id=c("1","2","3"))

Arguments

object Object of class aRTlayer.
operation One of:
  • union
  • intersection
  • difference
  • xor (does not work)
id The ids which to be used in the operation. difference and xor use only two ids. union and intersection have as default all objects of the layer.

Author(s)

Pedro Ribeiro de Andrade Neto

See Also

See aRTlayer-class to the description of this class.

Examples

## Not run: 
## difference between two geometries
getSetMetric(layer, "difference", ids=c("1", "2"))

## union of all geometries of the layer
getSetMetric(layer, "union", ids=getGeometry(layer)$id)
## End(Not run)

[Package aRT version 0.4-15 Index]