[R] Fill pattern for Boxplots?

[David L Carlson]

It's not too hard to use rect() to add shading to the boxplots. The boxes
are centered on consecutive integers and the width is +/- .4. The boxplot()
function returns the quartiles of each box. 

set.seed(42)
DF <- data.frame(val=rnorm(150), grp=rep(letters[1:6], 25))
outstat <- boxplot(val~grp, DF)           # save the boxplot stats
ngroups <- length(levels(DF$grp))         # get number of groups
dval <- c(6, 6, 6, 12, 12, 12)            # density vals for each group
aval <- c(0, 30, 60, 90, 120, 150)        # angle vals for each group
rect((1:ngroups)-.4, outstat$stats[2,], (1:ngroups)+.4, outstat$stats[4,], 
     density=dval, angle=aval)            # draw the rectangles

You can also play with lty= and lwd= but that will affect the box border as
well.

----------------------------------------------
David L Carlson
Associate Professor of Anthropology
Texas A&M University
College Station, TX 77843-4352

> -----Original Message-----
> From: r-help-bounces at r-project.org [mailto:r-help-bounces at r-
> project.org] On Behalf Of Susanne Meyfarth
> Sent: Thursday, August 09, 2012 12:08 PM
> To: John Kane
> Cc: r-help at r-project.org
> Subject: Re: [R] Fill pattern for Boxplots?
> 
> Thank you. I saw these postings, but I don't want to learn lattice for
> this reason (was afraid to have to change then everything else in my
> graph). Anyway, I now tried with different shades of greyscale (4
> shades). I'm not fully satisfied with it, but it's ok. It's for a
> publication and depending on whether I have to change the graph, I
> decide to either put texture in some boxes manually or still look for a
> solution in R.
> 
> 
> --------Original Message----------
> From: John Kane <jrkrideau at inbox.com>
> To: suse <meyfarth at uni-potsdam.de>, r-help at r-project.org
> Date: 09.08.2012 16:52
> Subject: Re: [R] Fill pattern for Boxplots?
> > Probably not. See http://r.789695.n4.nabble.com/Boxplot-Fill-Pattern-
> td4457209.html on this topic.
> >
> > What exactly are you doing?  There may be a workaround or
> alternative.
> >
> > John Kane
> > Kingston ON Canada
> >
> >
> 
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