Digiroo2 (version 0.6)

fDrawfigure: Plot the location of the random point falling within an individual's home range

Description

fDrawfigure extracts either a random point or a probability weighted random point falling within a specified home range. The random point, the observed locations, the specified ud vertice or the utilisation distribution can be plotted on a user-defined background.

Usage

fDrawfigure(x, iextract, idataxy = NULL, istudy = NULL)

Arguments

x

a numeric vector representing the individual to be plotted. This number relates to order in which animals are listed within the iextract object

iextract

either a SpatialPolygonsDataFrame object containing the vertice of interest or a SpatialGridDataFrame object containing the utilisation distribution of interest

idataxy

an optional dataframe containing the animal locations

istudy

optional background layer for the points to be plotted. This can be a spatial polygon object, a raster or blank = NULL

Examples

## Load required packages
library(adehabitatHR)

## Load study data
data(StudyArea)
data(Roos)

# Subset the data for only 1 individual
RooSubid <- 'Stripes'
RooSub <- subset(Roos,Roos$ID==RooSubid)
RooSub$ID <- as.character(RooSub$ID)

coordinates(RooSub) <- ~x+y

## Estimation of UD and KUD 95% for 1 animal
ud <- kernelUD(RooSub,h="href",same4all=TRUE)
ver95 <- getverticeshr(ud,95,unin = c("m"),unout=c("ha"))
udsgdf <- as(estUDm2spixdf(ud),"SpatialGridDataFrame")

## Extract random points falling within animal #1's KUD 95%
fDrawfigure(1,ver95,RooSub,StudyArea) 

## Extract probability-weighted random points falling within 
## animal #1's UD and draw on map of the study area. 
fDrawfigure(1,udsgdf,RooSub,StudyArea)