Extract or Replace Parts of an Object of Class ltraj
Extract or replace subsets of objects of class ltraj.
## S3 method for class 'ltraj' x[i, id, burst] ## S3 replacement method for class 'ltraj' x[i, id, burst] <- value
x |
an object of class |
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 |
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.
When replacement is done, it is required that value and
x have the same variables in attribute infolocs (i.e.,
both contain the same variables or both do not contain any variable,
see the help page of as.ltraj)
An object of class ltraj.
Clement Calenge clement.calenge@ofb.gouv.fr
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
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