aRTlayer-getOperation {aRT}R Documentation

getOperation

Description

Returns some spatial operation that is not stored in the layer. It returns the result of this operation over each element.

Usage

## S4 method for signature 'aRTlayer':
getOperation(object, operation= c("centroid", "hull", "buffer"), ID = NULL, distance = NULL, as.sp = TRUE)

Arguments

object Object of class aRTlayer.
operation One of:
  • centroid
  • hull
  • buffer
ID A subset of the layer's IDs, over which the metrics will be computed. In the case of NULL, getMetric calculates the metrics over each element of the layer.
distance The distance, used only with buffer.
as.sp A boolean value indicating whether the result should be a Spatial or an aRTgeometry object

.

Author(s)

Pedro Ribeiro de Andrade

See Also

See aRTlayer-class to the description of this class.

Examples

## Not run: 
getOperation(layer, "hull")
getOperation(layer, "buffer", dist=500)
## End(Not run)

[Package aRT version 1.7-1 Index]