Dear Vikas, First a few remarks: - as we don't have your dataset, your example is not reproducible. Please do add a (dummy) dataset next time. - adding spaces makes code much more readable. - why do you use scale_colour_gradient2 if you set the midpoint at the lower level? Use scale_colour_gradient instead. - You will have to tell us what the "desired" labels should look like.
I tried to figure out what your data looks like an created an example that works. Let us know if that is what you want. n <- 20 nPhase <- 5 b3 <- expand.grid(Year = seq_len(n), Phase = runif(nPhase, min = 1, max = 2)) b3$CDR <- rnorm(nrow(b3)) qplot(Year, CDR, data=b3,colour=Phase, group = Phase, geom=c("point","line"),legend.position="bottom") +scale_colour_gradient(limits=c(1,2), low="magenta", high="darkblue",breaks=c(1,2),labels=c("a","b")) ------------------------------------------------------------------------ ---- ir. Thierry Onkelinx Instituut voor natuur- en bosonderzoek / Research Institute for Nature and Forest Cel biometrie, methodologie en kwaliteitszorg / Section biometrics, methodology and quality assurance Gaverstraat 4 9500 Geraardsbergen Belgium tel. + 32 54/436 185 thierry.onkel...@inbo.be www.inbo.be To call in the statistician after the experiment is done may be no more than asking him to perform a post-mortem examination: he may be able to say what the experiment died of. ~ Sir Ronald Aylmer Fisher The plural of anecdote is not data. ~ Roger Brinner The combination of some data and an aching desire for an answer does not ensure that a reasonable answer can be extracted from a given body of data. ~ John Tukey -----Oorspronkelijk bericht----- Van: r-help-boun...@r-project.org [mailto:r-help-boun...@r-project.org] Namens Vikas Rawal Verzonden: donderdag 22 januari 2009 17:59 Aan: r-help@r-project.org Onderwerp: [R] ggplot2 I have been struggling to get the legends in ggplot2 right or do away with them altogether (on which I have already sent a post). In the following code, the labels argument in the scale_colour_gradient2 does not give me the desired labels in the legend. Could someone explain? qplot(Year,CDR,data=b3,colour=Phase,geom=c("point","line"),legend.positi on="bottom")->p p+scale_colour_gradient2(limits=c(1,2), midpoint=1,low="magenta", mid="magenta", high="darkblue",breaks=c(1,2),labels=c("a","b")->p p Vikas [[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. Dit bericht en eventuele bijlagen geven enkel de visie van de schrijver weer en binden het INBO onder geen enkel beding, zolang dit bericht niet bevestigd is door een geldig ondertekend document. The views expressed in this message and any annex are purely those of the writer and may not be regarded as stating an official position of INBO, as long as the message is not confirmed by a duly signed document. ______________________________________________ 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.