Hi,
Try this:
dat1<- read.table(text="
V1 V2 V3
1 Dosis Gewicht Geschlecht
2 0 6.62 m
3 0 6.65 m
4 0 5.78 m
5 0 5.63 m
6 1 6.78 m
7 1 6.45 m
8 1 5.68 m
9 1 5.89 m
10 0 6.72 f
11 0 6.75 f
12 0 5.89 f
13 0 5.78 f
14 1 6.89 f
15 1 7.75 f
16 1 4.89 f
17 1 5.89 f
",header=TRUE,sep="",stringsAsFactors=FALSE)
dat2<-dat1[-1,]
boxplot(as.numeric(dat2$V2)[dat2$V3=="m"])# works
dat2$V2<- as.numeric(dat2$V2)
library(ggplot2)
library(plyr)
library(reshape2)
dat2New<-mutate(melt(dat2,id.var=c("V1","V3")),combin=
as.character(interaction(V1,V3,sep="_")))
ggplot(dat2New,aes(x=combin,y=value))+geom_boxplot()
#or
ggplot(dat2New,aes(x=combin,y=value))+geom_boxplot()+facet_wrap(~V3,scales="free_x",ncol=2)
A.K.
----- Original Message -----
From: maggy yan <kiot...@gmail.com>
To: R-help@r-project.org
Cc:
Sent: Saturday, May 11, 2013 11:40 AM
Subject: [R] boxplot with grouped variables
my dataset looked like this in the beginning:
>Daten
V1 V2 V3
1 Dosis Gewicht Geschlecht
2 0 6.62 m
3 0 6.65 m
4 0 5.78 m
5 0 5.63 m
I need box plots for V2 with all combination of V1 and V3, so I deleted the
first row, and tried this:
boxplot(Daten$V2[Daten$V3=="m"])
but it does not work and I have no clue what I did wrong.
I'm thankful for any help!
[[alternative HTML version deleted]]
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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.
