[R] boxplot with text and symbols on x

From: Birgit Lemcke <birgit.lemcke_at_systbot.uzh.ch>
Date: Thu, 29 May 2008 10:40:19 +0200


Hello R-user community!

I am running R 2.7.0 on a Power Book (Tiger). (I am still R and statistics beginner)

I did the following :

pdf("InLnegthMaxHomogeneity.pdf")
boxplot(inflorescence_length_Max~Sex, main="Bartletts Homogeneity for inflorescence length",data=FemMal_Sex)
Homo<-bartlett.test(FemMal_Sex$inflorescence_length_Max,FemMal_Sex$Sex)

text( 2, 500, "Bartlett's K-squared=", col='red',adj = c(1,0) )
text( 2, 500, round(Homo$statistic,digits=5), col='red' ,adj = c(0,0))
text( 2, 480, "df=", col='red',adj = c(1,0) )
text( 2, 480, Homo$parameter, col='red' ,adj = c(0,0))

text( 2, 460, "p-value=", col='red', adj = c(1,0)) text( 2, 460, round(Homo$p.value,digits=5), col='red', adj = c(0,0))

dev.off()

As I am still not very good in R, I guess it is not the easiest way to implement the text and it was kind of fiddling around to find the right position for the text.
I would be glad if somebody would have an easier solution.

My second question is about adding symbols (usual male and female symbol) to the x-axis to label the boxes.

I would be very glad if somebody could help mw with this.

Many thanks in advance.

Greets

Birgit

Birgit Lemcke
Institut für Systematische Botanik
Zollikerstrasse 107
CH-8008 Zürich
Switzerland
Ph: +41 (0)44 634 8351
birgit.lemcke_at_systbot.uzh.ch

175 Jahre UZH
«staunen.erleben.begreifen. Naturwissenschaft zum Anfassen.» Weitere Informationen http://www.175jahre.uzh.ch/naturwissenschaft



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