Dear Nicolas, Thanks for your answer. You are totally right.
I am in the middle of the sampling campaign and I spend a lot of hours at sea, then when I sit to do the analysis sometimes I make this silly mistakes. In this case I chosed the wrong files (raw data), with real outliers. I selected the right files and now things seems to work better. I still have to see if the results makes sense in an ecological way. Thanks a lot for your suggestion. Cheers, Marc 2013/7/24 <animov-requ...@faunalia.it> > Send AniMov mailing list submissions to > animov@faunalia.it > > To subscribe or unsubscribe via the World Wide Web, visit > http://lists.faunalia.it/cgi-bin/mailman/listinfo/animov > or, via email, send a message with subject or body 'help' to > animov-requ...@faunalia.it > > You can reach the person managing the list at > animov-ow...@faunalia.it > > When replying, please edit your Subject line so it is more specific > than "Re: Contents of AniMov digest..." > > > Today's Topics: > > 1. Re: kerneloverlap() UDOI in adehabitatHR (Morellet Nicolas) > > > ---------------------------------------------------------------------- > > Message: 1 > Date: Wed, 24 Jul 2013 11:35:02 +0200 > From: Morellet Nicolas <nicolas.morel...@toulouse.inra.fr> > To: Animal Movement <animov@faunalia.it> > Subject: Re: [AniMov] kerneloverlap() UDOI in adehabitatHR > Message-ID: <51ef9fc6.1080...@toulouse.inra.fr> > Content-Type: text/plain; charset="iso-8859-1"; Format="flowed" > > Hi Mark, > > I think you should check a bit your data. I have the feeling that there > are several "outliers". You can see it easily with: > plot(tot, col=tot$Ind) > > Maybe the presence of these outliers induce these strange results, > even if I do not know exactly what is behind this UDOI measure. > > Try for example: > overlap<-kerneloverlap(tot[,2], meth="UDOI",percent=50) > > Results are really different (for the core area). > > Cheers, > Nicolas. > > Le 23/07/2013 16:29, marc fernandez a ?crit : > > Hi, > > > > I am having some issues in applying the home range overlap metrics > > with the adehabitatHR package. I tried to use the UDOI method and the > > BA. While the BA seems to work quite well,the values from the UDOI are > > very strange UDOI, ranging from 300 to 0.3. I wonder if it could be > > solved including the grid size? Or maybe it is related with the > > selection of the smoothing parameter? Can anyone help me? > > > > Here you have the code, and I also attach a reduced sample of the data. > > > > > tot<-read.csv("totall.csv", header=TRUE, sep=";") > > > coordinates(tot) <- ~Easting+Northing > > > summary(tot) > > Object of class SpatialPointsDataFrame > > Coordinates: > > min max > > Easting 268511 576049.4 > > Northing 4209927 4264506.2 > > Is projected: NA > > proj4string : [NA] > > Number of points: 1210 > > Data attributes: > > date Ind Sex > > 8/31/05 : 16 s5a : 77 F:647 > > 10/2/07 : 15 s9a : 75 M:563 > > 7/27/04 : 15 s6b : 74 > > 7/11/07 : 13 s8j : 63 > > 8/9/05 : 13 s7b : 62 > > 10/13/07: 12 m2c : 59 > > (Other) :1126 (Other):800 > > > overlap<-kerneloverlap(tot[,2], meth="UDOI") > > > > Thanks a lot! > > > > Cheers, > > > > MArc > > > > > > _______________________________________________ > > AniMov mailing list > > AniMov@faunalia.it > > http://lists.faunalia.it/cgi-bin/mailman/listinfo/animov > > > -- > > > ********************************************************** > Nicolas MORELLET > I.N.R.A. - Centre de Recherches de Toulouse > Comportement et ?cologie de la Faune Sauvage (C.E.F.S.) > BP 52627 - 31326 Castanet-Tolosan cedex (France) > Tel : 05.61.28.51.28 > Fax : 05.61.28.55.00 > ********************************************************** > > -------------- next part -------------- > An HTML attachment was scrubbed... > URL: < > http://lists.faunalia.it/pipermail/animov/attachments/20130724/586fd35b/attachment-0001.html > > > > ------------------------------ > > Subject: Digest Footer > > _______________________________________________ > AniMov mailing list > AniMov@faunalia.it > http://lists.faunalia.it/cgi-bin/mailman/listinfo/animov > > > ------------------------------ > > End of AniMov Digest, Vol 89, Issue 3 > ************************************* >
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