条形图使标签水平

Question

I know this must be very basic, but this command:

barplot(df$var, horiz = T)

Is producing this chart:

Yes, I've read the documentation of ?barplot and searched and tried lots of different parameter setting, like beside , names.arg , etc. but I can't make the y labels text horizontal as I'd assume it would be natural once the chart is horizontal.

I did try as per DaveT:

barplot(x$value, horiz = T, las=2)

Which now crops the labels text:

Can anyone help?

Answer 1

You need to add the "las" option to the function:

barplot(x$value, horiz = T, las=2)

Rstudio has this helpful cheat sheet posted on their website: https://github.com/rstudio/cheatsheets/raw/master/how-big-is-your-graph.pdf

Answer 2

par(mar=c(5,8,4,2) + 0.1) # Doubles left margin.
[draw your plot]
par(mar=c(5,4,4,2) + 0.1) # Restore default

If 8 is still too small, try a larger value. See?par for details.

Answer 3

Building on Keith 's answer, you can use a function such as

horizontal.plot <- function(pl) {
  par(mar=c(5,8,4,2) + 0.1) # Doubles left margin.
  pl
  par(mar=c(5,4,4,2) + 0.1) # Restore default
}

and call it like

horizontal.plot(barplot(mydata, hor=TRUE, las=2))