Re: [R] Multiple color schemes for barchart (lattice) On 6/6/07, Sarah Hawley  wrote: > Hello R-help. > > I am trying to make a stacked barplot where the color of the sections of > each bar depend on another variable. > > > myData[1:11,] >    score   percent    marker     cellType Malignant > 1      0 100.00000 ESR1 (ER) Bladder.M(5) TRUE > 2      0  80.00000      PAX8 Bladder.M(5) TRUE > 3      1  20.00000      PAX8 Bladder.M(5) TRUE > 4      0 100.00000 ESR1 (ER)   Brain.N(3) FALSE > 5      0 100.00000      PAX8   Brain.N(3) FALSE > 6      3 100.00000 ESR1 (ER) Breast.M(11) TRUE > 7      0 100.00000      PAX8 Breast.M(11) TRUE > 8      0  36.36364 ESR1 (ER) Cervix.M(11) TRUE > 9      1   9.09091 ESR1 (ER) Cervix.M(11) TRUE > 10     2  18.18182 ESR1 (ER) Cervix.M(11) TRUE > 11     3  36.36364 ESR1 (ER) Cervix.M(11) TRUE > > palette <- palette(gray(seq(0, 1,len=4))) > trellis.par.set(list(par.xlab.text=list(cex=0.85) >                    , superpose.polygon=list(col=palette()) >                    , axis.text=list(cex=0.8))) > > > barchart(percent~cellType|marker >         , groups=score >         , data=myData >         , stack=TRUE >         , xlab='N=Normal/Benign, M=Malignant' >         , ylab='Percentage of Cores Staining' >         , color=palette() >         , auto.key = list(points = FALSE, rectangles = TRUE, space = "top") >         , scales=list(x=list(rot=70)) >         , layout=c(1,2)) > > I would like to make the color scheme of the bar differ according to the > variable 'Malignant' and add a second color scheme to the key. It's pretty easy to do this with ggplot2 - see http://had.co.nz/ggplot2/position_stack.html for some examples. 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.