[AniMov] [SPAM] Re: Calculating spatial overlap using kerneloverlap()with BRB UDs

Guilherme De Miranda Mourao guilherme.mourao at embrapa.br
Wed Sep 28 21:01:36 CEST 2016


Dear Clément:

Thank you very much. It worked perfectly.
Guilherme

-- 
Guilherme de Miranda Mourão
Pesquisador A
Laboratório de Vida Selvagem

Embrapa Pantanal
Corumbá MS

guilherme.mourao at embrapa.br
www.cpap.embrapa.br

Fone:  +55 67   3234-5929
Fax:   +55 67   3234-5815

----- Mensagem original -----
De: "Calenge Clement" <Clement.Calenge at oncfs.gouv.fr>
Para: "Animal Movement" <animov at lists.faunalia.it>, animov at faunalia.it
Enviadas: Quarta-feira, 28 de Setembro de 2016 11:25:03
Assunto: [SPAM] Re: [AniMov] Calculating spatial overlap using kerneloverlap()with	BRB UDs

Dear Guilherme,


> Hi List:
> I am trying to estimate overlaps using the kerneloverlaphr function. The input objects are from estUDm class resulted from the BRB function. However, the overlap values seem odd, as low-overlapped "home ranges" had estimates as higher as the high-overlapped ones.
> Anyone can say what I am doing wrong?

Use the argument same4all=TRUE when you estimate the UD (it is expected 
that the UD are estimated over the same grid). If you use:

UD <- BRB(traject, D, tau=1, Tmax=100, Lmin=0.05, hmin=0.2, same4all=TRUE)

Everything runs fine.
I will try to change the code of kerneloverlaphr to return an error when 
the grid are not located at exactly the same place.
Best regards,

Clément Calenge


-- 
Clément CALENGE
Ingénieur Expert -- Biométricien
Cellule d'appui méthodologique
Direction de la Recherche et de l'Expertise
Office national de la chasse et de la faune sauvage
Saint Benoist - 78610 Auffargis
tel. (33) 01.30.46.54.14
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