[R] R lattice bwplot: Fill boxplots with specific color depending on factor level

[Richard M. Heiberger]

Pablo,

I would do it similarly.  I would also place the box and whiskers in
the specified colors.

## install.packages(HH)  ## if you don't have it
library(HH)

bwplot(mydata$Col1~mydata$Col3 | mydata$Col2,data=mydata,
       groups = Col3,
       as.table = TRUE, # added to make it easier for factor levels
       layout = c(3,1), # looks nicer and easier to read
       panel = panel.bwplot.superpose,
       col = c(red,"darkorange",green),
       fill = c(red,"darkorange",green), fill.alpha=.6)

I changed your amber to "darkorange" as the amber lines are almost invisible.

Rich

On Wed, Apr 22, 2015 at 9:26 PM, Duncan Mackay <dulcalma at bigpond.com> wrote:
> hi Pablo
>
> set.seed(1) # for reproducibility of data.frame
> mydata <- rbind(data.frame(Col1 = rnorm(2*1000),Col2 =rep(c("A", "C"),
> each=1000),Col3=factor(rep(c("YY","NN"), 1000))),data.frame(Col1 =
> rnorm(1000),Col2 =rep(c("B")),Col3=factor(rep(c("YY","YN"), 500))))
> mydata$Col2 <- factor(mydata$Col2)
>
> In future please do not put * at end makes it harder to copy
>
> red=rgb(249/255, 21/255, 47/255)
> amber=rgb(255/255, 200/255,0/255) # amended to reveal a colour difference
> green=rgb(39/255, 232/255, 51/255)
>
> # As  Deepayan Sarkar said bwplot is different to others
>
> bwplot(mydata$Col1~mydata$Col3 | mydata$Col2,data=mydata,
>        groups = Col3,
>        as.table = TRUE, # added to make it easier for factor levels
>        layout = c(3,1), # looks nicer and easier to read
>        panel = panel.superpose,
>        panel.groups = panel.bwplot,
>        fill = c(red,amber,green)
> )
>
> Duncan
>
> Duncan Mackay
> Department of Agronomy and Soil Science
> University of New England
> Armidale NSW 2351
> Email: home: mackay at northnet.com.au
>
> -----Original Message-----
> From: R-help [mailto:r-help-bounces at r-project.org] On Behalf Of Pablo
> Fleurquin
> Sent: Thursday, 23 April 2015 02:03
> To: r-help at r-project.org
> Subject: [R] R lattice bwplot: Fill boxplots with specific color depending
> on factor level
>
> Hi,
>
> I thoroughly looked for an answer to this problem with no luck.
>
> I have a dataframe with 3 factor levels: YY, NN, YN
>
> *>mydata <- rbind(data.frame(Col1 = rnorm(2*1000),Col2 =rep(c("A", "C"),
> each=1000),Col3=factor(rep(c("YY","NN"), 1000))),data.frame(Col1 =
> rnorm(1000),Col2 =rep(c("B")),Col3=factor(rep(c("YY","YN"), 500))))*
>
> Being Col3 of factor type with 3 levels: NN YY YN
>
> I want to make a boxplot using lattice bwplot and assign to each level a
> specific color:
>
>
>
>
>
>
> *# NN:>red=rgb(249/255, 21/255, 47/255)# YN:>amber=rgb(255/255, 126/255,
> 0/255)# YY:>green=rgb(39/255, 232/255, 51/255)*
>
> Using bwplot function:
>
>
> * >pl<-bwplot(mydata$Col1~mydata$Col3 |
> mydata$Col2,data=mydata,ylab=expression(italic(R)),panel=function(...){panel
> .bwplot(...,groups=mydata$Col3,
> fill=c(red,amber,green))})*
>
> IF YOU REPRODUCE THE EXAMPLE YOU WILL SEE THAT THE COLORS ARE NOT RELATED
> TO THE LEVELS IN MY DATAFRAME AS YY BOX IS NOT ALWAYS GREEN.
>
> IS THERE A WAY TO ASSIGN YY:green, NN:red, YN:amber?
>
> You can see the resulting figure in:
> http://stackoverflow.com/questions/29802129/r-lattice-bwplot-fill-boxplots-w
> ith-specific-color-depending-on-factor-level
>
> Thank you in advance!
> Pablo
>
>         [[alternative HTML version deleted]]
>
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> ______________________________________________
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> PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
> and provide commented, minimal, self-contained, reproducible code.