Hi Michel, In that case, you need to use segments:
?segments For a line, it works like: plot(xx,yy,type="n") segments(xx[-1],yy[-1],xx[-length(xx)],yy[-length(yy)],col=zz,lwd=2) For a step function, you'll have to do a bit more work :) Cheers, Tsjerk On Mon, Sep 16, 2013 at 9:20 AM, Arnaud Michel <michel.arn...@cirad.fr>wrote: > Hi Tsjerk > Thank you but the color always remains black ! > I would want that the color changes on the same graph (color = 3 on the 4 > first steps, col = 4 on 5 following steps.... > > Michel > > Le 16/09/2013 09:01, Tsjerk Wassenaar a écrit : > > Hi Michel, > > lines(xx,yy,col=zz-2,type="s") > > If you use a color vector, say cols, then you can also do > > lines(xx,yy,col=cols[zz-2],type="s") > > Hope it helps, > > Tsjerk > > > On Mon, Sep 16, 2013 at 8:42 AM, Arnaud Michel <michel.arn...@cirad.fr>wrote: > >> Hi >> >> I have the following problem : >> I have 3 vectors xx, yy, zz : >> xx <- c(5479, 6209, 6940, 7670, 8766, 9496, 10227, 11048, 11778, >> 12509, 13239, 13970, >> 14700, 15340, 15948) >> yy <- c( 267, 275, 281, 287, 296, 306, 316, 325, 334, 351, 365, 377, 389, >> 419, 419) >> zz <- c( 3, 3, 3, 3, 4, 4, 4, 4, 4, 5, 5, 5, 5, 6, 6) >> I would like a line wich join the points (xx, yy) with stair steps (as >> type = "s") >> plot(xx, yy, type="n") >> lines(xx, yy, type ="s") >> but I want to change the color according to the value of zz (exemple : >> col = 1 if zz =3 ; col =2 if zz= 4 ; col =3 if zz= 5 ; col =4 if zz= 6) >> Thank you for your help >> >> -- >> Michel ARNAUD >> Chargé de mission auprès du DRH >> DGDRD-Drh - TA 174/04 >> Av Agropolis 34398 Montpellier cedex 5 >> tel : 04.67.61.75.38 >> fax : 04.67.61.57.87 >> port: 06.47.43.55.31 >> >> ______________________________________________ >> 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. >> > > > > -- > Tsjerk A. Wassenaar, Ph.D. > > > -- > Michel ARNAUD > Chargé de mission auprès du DRH > DGDRD-Drh - TA 174/04 > Av Agropolis 34398 Montpellier cedex 5 > tel : 04.67.61.75.38 > fax : 04.67.61.57.87 > port: 06.47.43.55.31 > > -- Tsjerk A. Wassenaar, Ph.D. [[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.
