use:

boxplot(list(myData1=myData1, myData2=myData2, myData3=myData3),
main='....', xlab='...')


On 2/20/06, Alex Park <alex.park1@ntlworld.com> wrote:
>
> R helpers
>
> I am getting to grips with R but came across a small problem today that I
> could not fix by myself.
>
> I have 3 text files, each with a single column of data. I read them in
> using:
>
> myData1<-scan("C:/Program Files/R/myData1.txt")
> myData2<-scan("C:/Program Files/R/myData2.txt")
> myData3<-scan("C:/Program Files/R/myData3.txt")
>
> I wanted to produce a chart with 3 boxplots of the data and used:
>
> boxplot(myData1, myData2, myData3)
>
> This worked fine so I consulted R [help(bxp)] to add some format and
> labels
> e.g. title= , xlab =, ylab= , notch=TRUE etc. I managed to figure that ok.
>
> However, I could not figure out how to get the labels myData1, myData2,
> and
> myData3 on the boxplot x-axis to denote which box was which (though I knew
> by looking). Can anybody help with this?
>
> I trawled through my downloaded R pdfs but could not find a way.
>
> Regards
>
>
> Alex Park
>
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--
Jim Holtman
Cincinnati, OH
+1 513 646 9390

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