On 21.11.2010 20:30, emorway wrote:
Hello,
Searching this forum has enabled me to get pretty far in what I'm trying to
do. However, there is one more manipulation I would like to make and I
haven't found a solution. Using the data and code below, I generate the
plot produced by the last command. If possible I would like to reverse the
order of the y-axis (bearing in mind horizontal=T) so that 0 is plotted at
the upper most part of the y-axis and 3 at the axis intercepts. I've tried
the experiment approach to no avail, meaning I've placed rev(...) around
various arguments but with wrong results.
Thanks,
Eric
df<-read.table(textConnection("Field Date AvgWTD Region variable value hole
depth depthM
204 17-Aug-00 2.897428989 US R1 NA R 1 0
[SNIP]
9A 09-Aug-00 1.482089996 US C6 NA C 6 1.8
9B 01-Jun-01 1.409700036 US C6 NA C 6 1.8
9B 09-Aug-00 3.837660074 US C6 NA C 6 1.8"),header=T)
closeAllConnections()
#The folling call doesn't preserve the correct spacing between data
boxplot(value~depthM,data=df,horizontal=T,outline=F)
#The following command preserves correct spacing, but need to reverse the
order
boxplot(value~factor(depthM,levels=c(0.0,0.3,0.6,0.9,1.2,1.5,1.8,2.1,2.4,2.7,3)),data=df,horizontal=T,outline=F)
So if you want to reverse, either specify the levels in reverse order or
use rev() as in:
boxplot(value ~ factor(depthM,
levels = rev(c(0.0,0.3,0.6,0.9,1.2,1.5,1.8,2.1,2.4,2.7,3))),
data = df, horizontal = TRUE, outline = FALSE)
Uwe Ligges
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