X axis at 45 degrees

[ply]

This command puts the x axis labels at 90 degrees , how can I make it 45 degrees

boxplot(abcd$diameter~abcd$sample, las=2,cex.axis=0.5,xlab=NA

??

[M_AcostaCH]

Hi @ply you could get a better help if you put a reprex of you data. See this please,

FAQ: How to do a minimal reproducible example ( reprex ) for beginners

A minimal reproducible example consists of the following items: A minimal dataset, necessary to reproduce the issue The minimal runnable code necessary to reproduce the issue, which can be run on the given dataset, and including the necessary information on the used packages. Let's quickly go over each one of these with examples: Minimal Dataset (Sample Data) You need to provide a data frame that is small enough to be (reasonably) pasted on a post, but big enough to reproduce your issue. Let's say, as an example, that you are working with the iris data frame head(iris) #> Sepal.Length Sepal.Width Petal.Length Petal.Width Species #> 1 5.1 3.5 1.4 0.…

# Example of df
set.seed(123)  # Seed for reproducibility of code
abcd <- data.frame(
  diameter = rnorm(100, mean = 10, sd = 2),
  sample = rep(letters[1:4], each = 25))

# boxplot with x axis 45 grades.
boxplot(abcd$diameter ~ abcd$sample, las = 2, cex.axis = 0.5, xlab = NA)

But I think that is better use ggplot2:

library(ggplot2)
ggplot(abcd, aes(x = sample, y = diameter)) +
  geom_boxplot() +
  theme(axis.text.x = element_text(angle = 45, hjust = 1)) + # Set axis 45 grades
  labs(x = NULL)  

[AlexisW]

In pure base R, that doesn't seem possible; as discussed here, you can overwrite these labels with new labels with the desired angle:

boxplot(abcd$diameter ~ abcd$sample, xlab = NA, xaxt = 'n')
text(x = seq_along(unique(abcd$sample)),
     y = par("usr")[3]-0.25,
     labels = unique(abcd$sample),
     xpd = TRUE,
     srt = 45)

Briefly, xaxt = "n" removes the original labels, xpd = TRUE prevents clipping of the new labels. All that's left is to compute your own x, y and labels parameters, and you can indicate the angle in srt.