On 10/27/06, Stefan Grosse <[EMAIL PROTECTED]> wrote: > I have the following Data structure > > $ step45 : Factor w/ 2 levels > $ obserror : num 6.2 6.2 5.6 6.6 6.6 ... > $ Mon : num 2.2 2.0 1.0 3.2 2.0 ... > $ inc.comp : num 4 5 2 5 5 5 5 5 4 4 ... > > all I wanted to do is plotting Mon against obserror, the colors should > be by step45 and the size of the symbol should be according to inc.comp > so I did this: > > qplot(obserror,Mon,data=obscomp,col=inc.comp,col=step45)
I think you mean > qplot(obserror,Mon,data=obscomp, size=inc.comp,col=step45) > unfortunately the size of the is something I do not want it to be, the > legend for inc.comp says: 4, 2.25, 1 ,0.25 , 0 I suppose this are weights? I think there are two things here that are confusing you (both my fault) * the size aesthetic actually modifies the area (ie. sqrt(size)) of the points, because that is better perceptually * the legend isn't very good But it is mapping the inc.comp to the size of the variable. > I needed the as.factor otherwise the plot is again different. But that > did not work with size. OK I thought this is a second best solution but > unfortunately the symbols are to small. But setting a size = 3 which I > thout adds a constant size everywhere (somehow expectedly) did add a > third legend "3" with 3.61, 3.42, ... qplot currently doesn't have any way to set an aesthetic to a fixed value (it can't tell that you're specifying an aesthetic value not a data value). You can do this in two steps though p <- qplot(wt, mpg, data=mtcars, type=NULL, shape=cyl) ggpoint(p, size=3) > Another thing what I like to complain about is that qplot is using only > half of the windows graphics device space (especially wen adding this > size =3) which is not only ugly but a waste of space... That sounds like a bug. Could you please provide a reproducible example? Thanks, Hadley ______________________________________________ [email protected] 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.
