Re: [R] Stacked bar plot anomaly When column contains a negative and a positive value

From: Duncan Murdoch <murdoch_at_stats.uwo.ca>
Date: Sat, 03 May 2008 16:10:08 -0400

On 03/05/2008 3:29 PM, Murray Richardson wrote:
> Hello users,
>
> I've noticed a problem when creating a stacked column plot when a column
> contains a negative and a positive value. e.g.
>
> series1<-c(-1,-2, 3, 4, 5)
> series2<-c( 5, -4,-3,-2, 1)
> data<-rbind(series1,series2)
> barplot(as.matrix(data), beside=FALSE)
>
>
> In these cases (i.e. first, third and fifth columns) the plotting is not
> handled correctly. Compare this output with that of:

It doesn't make sense to stack values with mixed signs, but what barplot does appears to make sense. The first column has a bar of length -1 overplotted with a bar of length 5, which completely obscures it. What would you expect it to do?

Duncan Murdoch

>
>
> barplot(as.matrix(data), beside=TRUE)
>
>
> Shouldn't the plots look the same except in the beside=FALSE scenario
> the constituent bars should not be juxtaposed but instead are one on top
> of the other?
>
> Thanks for any advice!
>
> Murray Richardson
>
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https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code. Received on Sat 03 May 2008 - 20:18:40 GMT

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