2009/12/3 Peng Cai <pengcaimaill...@gmail.com>:
> Hi R Users,
>
> I'm using following data/code (data is attached also) to produce a stacked
> barplot.
>
> # Sample Data:
> Names Col1 Col2 Col3
> Row1 -20 40 -10
> Row2 30 -20 40
> Row3 30 10 -20
> Row4 20 20 -10
>
>
> # R Code:
> dta<-read.table("data.txt", header=TRUE, row.names="Names")
> barchart(data.matrix(dta),
> horizontal=FALSE,
> stack=TRUE,
> par.settings = simpleTheme(col = 3:5),
> auto.key=list(space="right"),
> border=NA
> )
>
> I need help with:
>
> 1. How can I remove the (y-axis) tick marks on the right side of the plot.
Since you only have one panel, try scales = "free"
> 2. While reading in the data, I'm using "row.names=Names". Can I generalize
> this? What I mean is if for some other data set, the row names column
> has some other name (say Names2) or may be just blank. Can I still produce a
> similar graph plotting row labels (in this case they are Row1, Row2, ...) on
> x-axis.
row.names can be a column number (1)
See ?read.table
It also describes the behaviour when the row names column is blank.
>
> Any help would be appreciated,
>
> Thanks,
> Peng
>
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>
--
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