Dear All, I am trying to build a stacked bar plot, where I define the colours to use.
I have asked this before, and I was using a solution in http://thread.gmane.org/gmane.comp.lang.r.general/100649/focus=100673 (thanks, Thierry). However, it looks this works only when the data are in the sequence of the levels in the factor defining the fill colours. When the sequence is different, the legend gets "scrambled", in that the order of the colours does not match the labels. My code is below. Can anyone tell me how to get around this? (R 2.2.6 for Windows, ggplot2 version 2_0.5.7) Thanks, Pedro library(ggplot2) Data: > plotdata2 x y group 1 1 0.1 grey30 2 2 0.2 grey30 3 3 0.3 grey10 4 4 0.4 grey90 5 1 0.1 grey30 6 2 0.2 grey60 7 3 0.3 grey60 8 4 0.4 grey90 9 1 0.1 grey60 10 2 0.2 grey10 11 3 0.3 grey90 12 4 0.4 grey30 13 1 0.1 grey90 14 2 0.2 grey60 15 3 0.3 grey10 16 4 0.4 grey10 > levels(plotdata2$group) [1] "grey10" "grey30" "grey60" "grey90" > as.numeric(plotdata2$group) [1] 2 2 1 4 2 3 3 4 3 1 4 2 4 3 1 1 Code: plot0<-ggplot() layer1<-layer(data=plotdata2, mapping=aes_string(x='x',y='y', fill='group'),geom='bar', stat='identity', position='stack') scaleFill<-scale_fill_identity(labels=levels(plotdata2$group), guide='tile', name='Group') scaleY<-scale_y_continuous(limits=c(0,4), expand=c(0,0)) plot1<-plot0+layer1 +scaleFill +scaleY plot1 ______________________________________________ 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.
