On 2011-04-04 06:39, Andrew D. Steen wrote:
I am trying to make a barplot with a broken axis using gap.barplot (in the
indispensable plotrix package). This works well when the data is a vector:
twogrp<-c(rnorm(10)+4,rnorm(10)+20)
gap.barplot(twogrp,gap=c(8,16),xlab="Index",ytics=c(3,6,17,20),ylab="Group
values",main="Barplot with gap")
But when the data is an array (for a bar plot with multiple series) I get an
error and a strange plot with no y-tics and bars stretching downwards, as if
all the values were negative:
twogrp2<-array(twogrp, dim=c(2,5))
gap.barplot(twogrp2,gap=c(8,16),xlab="Index",ytics=c(3,6,17,20),ylab="Group
values",main="Barplot with gap")
Error in rect(xtics[bigones] - halfwidth, botgap, xtics[bigones] +
halfwidth, :
cannot mix zero-length and non-zero-length coordinates
However, the main title and axis labels do appear correctly.
Are data arrays unsupported for gap.barplot, or am I missing something?
Looks like they're not supported, as you could easily see from
the code. But do gapped stacked barplots even make sense? Not
to me.
Still, I think that the plotrix documentation is somewhat
spotty. The help page for gap.barplot indicates that the
input 'y' should be 'data values'; not overly informative.
Peter Ehlers
Thanks,
Drew Steen
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