I had same problem once.
You can try this.
just put your number of individuals in the for loops

## estimates the MCP
cp <- mcp(rel[,1])
plot(cp)

#make a matrix to receave the data
res <- matrix(NA,4,4,dimnames=list(c(
"1","2","3","4"),
                                   c("1","2","3","4")))

#calc sobreposition area
for(i in 1:4){
 for(j in 1:4){
   p1 <- as(cp@'polygons'[[i]]@'Polygons'[[1]]@'coords','gpc.poly')
   p2 <- as(cp@'polygons'[[j]]@'Polygons'[[1]]@'coords','gpc.poly')
   res[i,j] <- area.poly(p1)+area.poly(p2)-area.poly(union(p1,p2))
         }}
res/10000

#make % if you need
res2 <- matrix(NA,4,4,dimnames=list(c("1","2","3","4"),
                                   c("1","2","3","4")))
for(i in 1:4) {
               temporario<-(res[,i]/10000)/cp$area[i]*100
               res2[,i]<-temporario
               }
res2


2012/3/27 Conrado Galdino <galdinoc@gmail.com>

> Dear all,
>
>
> I estimated the home range area of individuals from my study system by
> using MCP method - function mcp() adehabitatHR package. Now I'm in need to
> estimate overlap home ranges areas among those individuals in accordance to
> the estimated polygons, however it seems that adehabitatHR is not able to
> handle home range overlaps from  HR's given by mcp function. I see that it
> is possible to obtain such overlaps by Kernel-density method -
> kerneloverlap() - but it is not my specific intends. Is it kerneloverlap()
> the only way I have to obtain the HR overlap areas by using adehabitatHR
> package?
>
> In the wait for the experienced voices
>
> Hope that my words sounds clear,
> Sincerely,
> --
> »Conrado A. B. Galdino
> ---
>
> Programa de Pós-Graduação em Zoologia da PUC-Minas
> Av. Dom José Gaspar, 500 - Coração Eucarístico, 30535-610, Belo
> Horizonte-MG, Brasil
> Fone: (31) 3319-4407
> Currículo Lattes <http://lattes.cnpq.br/3366127364836718>
> Perfil no Google Scholar
> Citations<http://scholar.google.com/citations?user=vIk1I1UAAAAJ>
>
> -Baixe minhas publicações:
> -My papers for download:
> http://www.mendeley.com/profiles/conrado-galdino/publications/journal/
>
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>
>
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>


-- 
Grato
Augusto C. A. Ribas

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