Try colscaledivs=100 #colscaledivs=15 here is the R default levelplot(z ~ x * y, g,xlab="x co-ordinate",ylab="y co-ordinate",colorkey=TRUE,at=seq(from=-0.01,to=0.25,length=colscaledivs),col.regions=(col=gray((0:colscaledivs)/colscaledivs)))
Toby Marthews Le Ven 13 juin 2008 18:50, emma hartnett a écrit : > I am drawing level plots but I would like to specify the range of the > colorkey, I am not having any success figuring this out so any help would > be greatly appreciated! > > Here is an example of what I am trying to do: > > disp<-1 > > x <- seq(1, 10,by=1) > y <- seq(1,10,by=1) > g <- expand.grid(x = x, y = y) > g$z <- 1/exp((abs(g$x-5)+abs(g$y-5))*disp) > g$z<-g$z/sum(g$z) > > levelplot(z ~ x * y, g,xlab="x co-ordinate", ylab="y co-ordinate" > ,colorkey=TRUE,col.regions=(col=gray((0:32)/32))) > > I would like to enforce the number of divisions on the colorkey scale and > the size – so for example from 0 to 0.1 in increments of 0.02 (just as an > example). > > I apologize if this is an obvious question but I have read the > documentation and scoured the archives and cannot figure it out. > > > > > __________________________________________________________ > can.html > > ______________________________________________ > 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. ______________________________________________ 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.
