Wrapping long labels in barplot(2)
Building on Tom's reply, the following should work:
labels <- factor(paste("This is a long label ", 1:10))
labels
[1] This is a long label 1 This is a long label 2 [3] This is a long label 3 This is a long label 4 [5] This is a long label 5 This is a long label 6 [7] This is a long label 7 This is a long label 8 [9] This is a long label 9 This is a long label 10 10 Levels: This is a long label 1 ... This is a long label 9
short.labels <- sapply(labels, function(x) paste(strwrap(x,
10), collapse = "\n"), USE.NAMES = FALSE)
short.labels
[1] "This is\na long\nlabel 1" "This is\na long\nlabel 2" [3] "This is\na long\nlabel 3" "This is\na long\nlabel 4" [5] "This is\na long\nlabel 5" "This is\na long\nlabel 6" [7] "This is\na long\nlabel 7" "This is\na long\nlabel 8" [9] "This is\na long\nlabel 9" "This is\na long\nlabel 10"
mp <- barplot2(1:10) mtext(1, text = short.labels, at = mp, line = 2)
HTH, Marc Schwartz
On Thu, 2005-04-14 at 16:14 +0700, Jan P. Smit wrote:
Dear Tom, Many thanks. I think this gets me in the right direction, but concatenates all levels into one long level. Any further thoughts? Best regards, Jan Mulholland, Tom wrote:
This may not be the best way but in the past I think I have done something like levels(x) <- paste(strwrap(levels(x),20,prefix = ""),collapse = "\n") Tom
-----Original Message-----
From: Jan P. Smit [mailto:janpsmit at gmail.com]
Sent: Thursday, 14 April 2005 11:48 AM
To: r-help at stat.math.ethz.ch
Subject: [R] Wrapping long labels in barplot(2)
I am using barplot, and barplot2 in the gregmisc bundle, in the
following way:
barplot2(sort(xtabs(expend / 1000 ~ theme)),
col = c(mdg7, mdg8, mdg3, mdg1), horiz = T, las = 1,
xlab = "$ '000", plot.grid = T)
The problem is that the values of 'theme', which is a factor, are in
some cases rather long, so that I would like to wrap/split them at a
space once they exceed, say, 20 characters. What I'm doing now is
specifying names.arg manually with '\n' where I want the
breaks, but I
would like to automate the process.
I've looked for a solution using 'strwrap', but am not sure
how to apply
it in this situation.
Jan Smit