Hi list,
I've thus far not found a solution to my problem and hope someone can help.
I have a data matrix and wish to plot a stacked bar plot using barplot().
This is simple enough, but I have a problem with the legend labels being in
the reverse order from what I want. The default appears to have labels
ascending bottom-to-top reflecting bottom-to-top sub-bars, but I would like
the labels to be the reverse, i.e. ascend top-to-bottom. Please see my
example code below for an illustration of the problem.
For a reason unknown to me, if I plot a juxtaposed barplot using
beside=TRUE, the legend labels are actually in the order I want
(top-to-bottom labels). Is there any way to make the legend appear the way
I want for a stacked barplot? If one exists, I can't find an appropriate
argument to pass to args.legend.
Many thanks,
Tom
### START ###
A <- c(50,30,10,10)
B <- c(20,10,30,10)
mat <- cbind(A,B)
rownames(mat) <- c(1,2,3,4)
barplot(mat,legend.text=rownames(mat)) #legend labels are in wrong order
here
barplot(mat,legend.text=rownames(mat),beside=TRUE) #correct order
### END ###
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