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

From: Murray Richardson <murray.richardson_at_utoronto.ca>
Date: Sat, 03 May 2008 15:29:41 -0400

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)
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:

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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