R help - Jan 2012 - Stacked barchart in ggplot (or other library)

Hey,

I want to create a stacked barchart in R for the following dataset
(http://pastebin.com/pyHUNgr2):

#	usage	capacity	diff
1	4	10		6
2	2	20		18
3	5	10		5

The stacked barchart should, in one plot show each line of the dataset as a
stacked bar using data from 'usage' and 'diff' to create the
stacked bar.

I can't find a good example of how to do this on the ggplot2 site.

Thanks in advance!  

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Bart6114 wrote on 01/20/2012 08:54:39 AM:
> Hey,
> 
> I want to create a stacked barchart in R for the following dataset
> (http://pastebin.com/pyHUNgr2):
> 
> #   usage   capacity   diff
> 1   4   10      6
> 2   2   20      18
> 3   5   10      5
> 
> The stacked barchart should, in one plot show each line of the dataset 
as a
> stacked bar using data from 'usage' and 'diff' to create
the stacked
bar.
> 
> I can't find a good example of how to do this on the ggplot2 site.
> 
> Thanks in advance!

See the help on barplot:
?barplot

For example: 

df <- data.frame(usage=c(4, 2, 5), capacity=c(10, 20, 10), diff=c(6, 18, 
5))
barplot(t(as.matrix(df[, 1:2])))

Jean
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