adehabitat (version 1.8.12)

Extract.ltraj: Extract or Replace Parts of an Object of Class ltraj

Description

Extract or replace subsets of objects of class ltraj.

Usage

## S3 method for class 'ltraj':
[(x, i, id, burst)
  ## S3 method for class 'ltraj':
[(x, i, id, burst) <- value

Arguments

x

an object of class ltraj

i

numeric. The elements to extract or replace

id

a character vector indicating the identity of the animals to extract or replace

burst

a character vector indicating the identity of the bursts of relocations to extract or replace

value

an object of class ltraj

Value

• An object of class ltraj.

Details

Objects of class ltraj contain several bursts of relocations. This function subsets or replaces these bursts, based on their indices or on the attributes id *or* burst.

See Also

ltraj, gdltraj

Examples

data(puechcirc)
  puechcirc

  ## Extract the second and third bursts
  (toto <- puechcirc[2:3])

  ## Extracts all bursts collected on the animal JE
  puechcirc[id = "JE93"]

  
  ## Replace one burst
  toto[2] <- puechcirc[1]
  toto