| capthist.parts {secr} | R Documentation |
Extract parts of an object of class 'capthist'.
animalID(object, names = TRUE) occasion(object) trap(object, names = TRUE) xy(object) signal(object) xy(object) <- value signal(object) <- value
object |
a 'capthist' object |
names |
if FALSE the values returned are numeric indices rather than names |
value |
replacement value (see Details) |
These functions extract data on detections, ignoring occasions when an animal was not detected.
trap returns polygon or transect numbers if traps(object)
has detector type 'polygon' or 'transect'.
Replacement values must precisely match object in number of
detections in their order. xy<- expects a dataframe of x and y
coordinates for points of detection within a 'polygon' or 'transect'
detector.
For animalID and trap a vector of numeric or character values, one per detection.
For occasion, a vector of numeric values, one per detection.
For xy, a dataframe with one row per detection and columns 'x' and 'y'.
For signal, a numeric vector with one element per detection.
Murray Efford murray.efford@otago.ac.nz
data(captdata) animalID(captdata) temp <- sim.capthist(popn=list(D=1), make.grid(detector='count')) cbind(ID=as.numeric(animalID(temp)), occ=occasion(temp), trap=trap(temp))