Draw ggplot2 Line Chart with Labels at Ends of Lines (Example Code)
In this article you’ll learn how to draw a ggplot2 line graph with labels at the end of each line in the R programming language.
Setting up the Example
data(iris) # Example data iris_mod <- iris iris_mod$x <- rep(1:(nrow(iris_mod)/ length(table(iris_mod$Species))), 3) iris_mod$label <- NA iris_mod$label[which(iris_mod$x == max(iris_mod$x))] <- as.character(iris_mod$Species[which(iris_mod$x == max(iris_mod$x))]) head(iris_mod) # Sepal.Length Sepal.Width Petal.Length Petal.Width Species x label # 1 5.1 3.5 1.4 0.2 setosa 1 <NA> # 2 4.9 3.0 1.4 0.2 setosa 2 <NA> # 3 4.7 3.2 1.3 0.2 setosa 3 <NA> # 4 4.6 3.1 1.5 0.2 setosa 4 <NA> # 5 5.0 3.6 1.4 0.2 setosa 5 <NA> # 6 5.4 3.9 1.7 0.4 setosa 6 <NA> install.packages("ggplot2") # Install & load ggplot2 package library("ggplot2") |
my_plot <- ggplot(iris_mod, # ggplot2 plot without labels
aes(x = x,
y = Sepal.Length,
col = Species)) +
geom_line()
my_plot
Have a look at the following R tutorials. They discuss topics such as plot legends, labels, and colors.install.packages("ggrepel") # Install ggrepel package
library("ggrepel") # Load ggrepel
<pre lang="php">my_plot + # ggplot2 plot with labels
geom_label_repel(aes(label = label),
nudge_x = 1,
na.rm = TRUE) +
theme(legend.position = "none")
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