Im trying to make a box and whisker plot in ggplot but I cant seem to make it work.
My data is this below. I can make it just fine using the default boxplot function but not ggplot. The thing is it wants an x and y but I don't have a y axis besides a value.
boxplot(data1) works just fine and its too simple to mess up.
In order to use the boxplot function, you must first pivot longer so your data looks like
library(tidyverse)
# generating random data
data <- tibble(
before = runif(30, 30, 40),
after = runif(30, 35, 45)
)
(data <- data %>%
pivot_longer(everything(), names_to = "time", values_to = "value"))
#> # A tibble: 60 × 2
#> time value
#> <chr> <dbl>
#> 1 before 36.0
#> 2 after 36.7
#> 3 before 32.4
#> 4 after 38.7
#> 5 before 33.1
#> 6 after 44.7
#> 7 before 39.0
#> 8 after 36.4
#> 9 before 39.6
#> 10 after 43.8
#> # ℹ 50 more rows
Then, you can use geom_boxplot
ggplot(data) +
geom_boxplot(aes(x = time, y = value))
