How to create a stacked line plot

Question

There are multiple solutions to create a stacked bar plot in R, but how to draw a stacked line plot?

Accepted Answer

A stacked line plot can be created with the `ggplot2` package.

Some example data:

```
set.seed(11)
df <- data.frame(a = rlnorm(30), b = 1:10, c = rep(LETTERS[1:3], each = 10))
```

The function for this kind of plot is `geom_area`:

```
library(ggplot2)
ggplot(df, aes(x = b, y = a, fill = c)) + geom_area(position = 'stack')
```

Solution