# ID, Bursts and infolocs of an Object of Class ltraj Functions to get or set the attribute `"id"`, `"burst"`, and `"infolocs"` of the components of an object of class `ltraj`. ```r burst(ltraj) burst(ltraj) <- value id(ltraj) id(ltraj) <- value infolocs(ltraj, which) infolocs(ltraj) <- value removeinfo(ltraj) ``` ## Arguments - `ltraj`: an object of class `ltraj` - `value`: for the assignment functions `burst` and `id`, a character vector of up to the same length as `ltraj`. For `infolocs` a list of data frames of the same length of `ltraj` (with each component having the same number of rows as the corresponding element in `ltraj`). - `which`: an optional character vector containing the names of the variables in the `infolocs` attribute to be returned ## Details The functions `id`, `burst` and `infolocs` are accessor functions, and `id<-` and `burst<-` are replacement function. `removeinfo` removes the attribute `infolocs` from the object `ltraj` (see the help page of `as.ltraj`). ## Returns For `id` and `burst`, a character vector of the same length as `ltraj`. For `infolocs`, the data frame containing the information on the relocations. `removeinfo` returns an object of class `ltraj`. For `id<-` and `burst<-`, the updated object. (Note that the value of `burst(x) <- value` is that of the assignment, `value`, not the return value from the left-hand side.) ## Author(s) Clement Calenge clement.calenge@ofb.gouv.fr ## See Also `ltraj`, `names` ## Examples ```r data(puechcirc) puechcirc ## To see the ID and the burst id(puechcirc) burst(puechcirc) ## Change the burst burst(puechcirc) <- c("glou", "toto", "titi") puechcirc burst(puechcirc)[2] <- "new name" puechcirc ## Change the ID id(puechcirc)[id(puechcirc)=="CH93"] <- "WILD BOAR" puechcirc ## example of an object with an attribute "infolocs" data(capreochiz) head(capreochiz) ## Create an object of class "ltraj" cap <- as.ltraj(xy = capreochiz[,c("x","y")], date = capreochiz$date, id = "Roe.Deer", typeII = TRUE, infolocs = capreochiz[,4:8]) cap cap2 <- removeinfo(cap) cap2 infolocs(cap) ```

burst function