On 8/2/07, Emilio Gagliardi <[EMAIL PROTECTED]> wrote: > Hi Thierry and Hadley, > > Thanks for your help! I got it working almost 100% to what I want. My last > questions are simple I think ;) > 1) How can I pass a label to colour and assign the color at the same time? > The auto-selection of colors is awesome for learning, but makes it harder to > see some patterns.
I'm not sure what you mean? Could you provide an example? > 2) in regards to 1), where can I find a list of the possible values that can > be passed to colour=""? I've seen in some examples "gray50" but when I try > it, it doesn't come out gray50, it just prints that as the label. For > example, in my case, I could have 4 colors with 4 different shades of each. > Or maybe I can use word length and gray scale, and make longer words darker, > etc... I will try and explain this more in the book - but there's a difference between mapping and setting. In qplot values are always mapped (this is usually what you want - you want to specify the raw values and have them automatically mapped to sensible visual properties). If you manually add on geoms you can map or set: * mapping: + geom_point(aes(colour = "Treatment A")) * setting: + geom_point(colour = "green") Note in the second case, the colour must be a valid R colour. Hadley ______________________________________________ R-help@stat.math.ethz.ch 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.
