Did you look at ?barplot?
# x is a data.frame from below
x2 <- do.call("rbind", split(x$Count, x$CAT1))
dimnames(x2)[[2]] <- letters[1:3]
barplot(x2, legend = TRUE)
Sundar
Yun-Fang Juan wrote:
> posting the question in r-help@ to get more feedback :-)
>
> thanks,
>
> Yun-Fang
> ----- Original Message -----
> From: "Yun-Fang Juan" <yunfang at yahoo-inc.com>
> To: <s-news at wubios.wustl.edu>
> Sent: Tuesday, December 16, 2003 2:04 PM
> Subject: [S] plot stacked bar chart in R
>
>
>
>>Hi,
>>I am trying to plot a stacked bar chart in R but am not able to find the
>>documentation.
>>
>>The input data format is like the following
>>
>>
>>CAT1 CAT2 Count
>>A a 234
>>A b 758
>>A c 156
>>B a 753
>>B b 568
>>B c 684
>>C a 356
>>C b 564
>>C c 256
>>D a 123
>>D b 165
>>D c 754
>>
>>please advice.
>>
>>
>>thanks,
>>
>>
>>Yun-Fang
>>
>>
>>--------------------------------------------------------------------
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>
>>
>
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