Hi Aurelie,
Try this: skate.ppp$marks <- data.frame(species=skate.ppp$marks, number=skate$number) HTH, MArcelino At 17:41 17/10/2011, GodinA wrote: >Hi all, I have a multitype point patterns >representing 12 different species as >follow: >marked planar point pattern: 821 >points >multitype, with levels = >88 90 91 92 93 94 96 > 98 99 100 102 >107 >window: rectangle = [-60, -45] x [40, 56] >units > >head(as.data.frame(skate.ppp)) x y > marks 1 -54.198 55.127 88 2 -51.071 >43.015 88 3 -47.050 48.111 88 4 -46.377 >47.552 88 5 -46.470 47.274 88 6 -51.301 >43.041 88 I would like to add another mark >with the number of species found at each >location. I'm sure this is fairly >straightforward, but somehow I am struggling >with it! I have been doing the >following: >marks(skate.ppp) <- skate$number >However, when I do so, I am replacing all my >previous marks by these new ones... > >head(as.data.frame(skate.ppp)) x y >marks 1 -54.198 55.127 2 2 -51.071 >43.015 1 3 -47.050 48.111 2 4 -46.377 >47.552 1 5 -46.470 47.274 1 6 -51.301 >43.041 4 > skate.ppp marked planar point >pattern: 821 points marks are numeric, of type >âdoubleâ window: rectangle = [-60, -45] x >[40, 56] units Thank you very much in advance! >Aurelie ----- Aurelie Cosandey-Godin Ph.D. >Candidate, Department of Biology Industrial >Graduate Fellow, WWF-Canada Dalhousie University >| Biology Dept. |Halifax, NS, Canada Email: >god...@dal.ca | Web: wormlab.biology.dal.ca >-------------------------------------------------------------------------- >Want to learn more about sharks in Atlantic >Canada? Visit ShARCC! www.atlanticsharks.org -- >View this message in context: >http://r-sig-geo.2731867.n2.nabble.com/multitype-point-patterns-tp6901052p6901052.html > >Sent from the R-sig-geo mailing list archive at >Nabble.com. >_______________________________________________ >R-sig-Geo mailing list R-sig-Geo@r-project.org >https://stat.ethz.ch/mailman/listinfo/r-sig-geo ____________________________________ Marcelino de la Cruz Rot Depto. Biologia Vegetal EUIT Agricola Universidad Politecnica de Madrid tel: 34 + 913365435 ____________________________________ [[alternative HTML version deleted]]
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