Rotating x axis labels in R for barplot?

Question

I am trying to get the x axis labels to be rotated 45 degrees on a barplot with no luck. This is the code I have below: barplot(((data1[,1] - average)/average) * 100, srt = 45, adj = 1, xpd = TRUE, names.arg = data1[,2], col = c("#3CA0D0"), main = "Best Lift Time to Vertical Drop Ratios of North American Resorts", ylab = "Normalized Difference", yaxt = 'n', cex.names = 0.65, cex.lab = 0.65)

Answer 1

Rotating the x axis labels for a bar plot is straightforward when you use the R library called ggplot2. The following directions are inspired by the discussion presented at https://www.statology.org/rotate-axis-labels-ggplot2/.

#This creates the dataframe with the information you want to display in your barplot (assuming that data1 #and average already exists in your R workspace)

df = data.frame(normalized.diff = ((data1[,1] - average)/average) * 100), resorts = data1[,2])

#This loads the ggplot 2 library, which is necessary for the remaining code to run correctly

library(ggplot2)

#This constructs the bar plot with the x axis labels rotated by 45 degrees

#The values for vjust and hjust may need to be adjusted to make the rotated x axis labels

#sufficiently close to the bar plot

ggplot(data = df, aes(x = resorts, y = normalized.diff)) +

geom_bar(stats = "identity",colour = "#3CA0D0") +

theme(axis.text.x = element_text(angle=45, vjust=.5, hjust=1)) +

labs(main = "Best Lift Time to Vertical Drop Ratios of North American Resorts",

ylab = "Normalized Difference")