library(ggplot2)
my_title = "This is a really long title of a plot that I want to nicely wrap \n and fit onto the plot without having to manually add the backslash n, but at the moment it does not"
r <- ggplot(data = cars, aes(x = speed, y = dist))
r + geom_smooth() + #(left)
opts(title = my_title)
我可以将绘图标题设置为环绕并缩小文本以适合绘图吗？
您必须手动选择要换行的字符数，但是strwrap and paste会做你想做的事。
wrapper <- function(x, ...)
{
paste(strwrap(x, ...), collapse = "\n")
}
my_title <- "This is a really long title of a plot that I want to nicely wrap and fit onto the plot without having to manually add the backslash n, but at the moment it does not"
r +
geom_smooth() +
ggtitle(wrapper(my_title, width = 20))
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