Hi Jim, Thank you for your answer, finally I resolved the problem with this code:  inverse=function(x){ inv<-numeric(length=(length(x))) for (i in 1:length(x)) inv[i]<-x[length(x)-(i-1)] return(inv) } plot(Barerror$MoyArea~Barerror$Mois,type="l") polygon(x=c(Barerror$Mois,inverse(Barerror$Mois),Barerror$Mois[1]),y=c(Barerror$MoyArea+Barerror$SdArea,inverse(Barerror$MoyArea-Barerror$SdArea),Barerror$MoyArea[1]+Barerror$SdArea[1]),col="gray",border=NA) lines(Barerror$MoyArea~Barerror$Mois,lwd=2)  Thanks Komine Â
________________________________ De : Jim Lemon [via R] <ml-node+s789695n4216146...@n4.nabble.com> Envoyé le : Mardi 20 Décembre 2011 1h42 Objet : Re: Polygon Komine wrote: ________________________________ Hi Komine, I think you want a dispersion band around y (Mean Area). Without the data I really can't tell, but the dispersion function in the plotrix package using type="l" and fill=<some color> may do what you want. Jim ______________________________________________ [hidden email] mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code. ________________________________ If you reply to this email, your message will be added to the discussion below: http://r.789695.n4.nabble.com/Polygon-tp4186283p4216146.html To unsubscribe from Polygon, click here. NAML -- View this message in context: http://r.789695.n4.nabble.com/Re-Polygon-tp4217607p4217607.html Sent from the R help mailing list archive at Nabble.com. [[alternative HTML version deleted]]
______________________________________________ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.