Multiple boxplot for different variable using same facet

I am new to R. I want to plot 4 box plots for 4 continuous variables and present them in the same plot. I am trying to present the boxplot for each variable in 2 study groups while using facet_wrap in ggplot.

dividing variable is: cognitive_groups (has two values 0, 1) the 4 variables are: memory (presented here), attention, exeuctive and language domains. here is the code,

cogdb_bl%>%
filter(!is.na(cognitive_groups))%>%
ggplot(aes(x=memory)) 
geom_boxplot(aes(y="")) 
facet_wrap(~cognitive_groups) 
theme_bw() 
coord_flip() 
labs(title="Cognitive domains in baseline groups",
   x="Z score")

Here is the output, How do I present the other variables alongside the memory? THANKS!

CodePudding user response：

Do you mean like this? A tribble by the way is a nice way to create a minimal sample of data.

library(tidyverse)

tribble(
  ~participant, ~memory, ~attention, ~language, ~executive, ~cognitive,
  "A", 2, 5, 2, 2, 0,
  "B", 2, 2, 5, 2, 1,
  "C", 2, 2, 2, 2, 0,
  "D", 2, 3, 2, 6, 1,
  "E", 2, 2, 2, 2, 0,
  "F", 2, 2, 8, 2, 0,
  "G", 2, 4, 2, 2, 1,
  "H", 2, 2, 7, 2, 1
) |>
  pivot_longer(c(memory, attention, language, executive), 
               names_to = "domain", values_to = "score") |>
  ggplot(aes(domain, score))  
  geom_boxplot()  
  facet_wrap(~cognitive)  
  theme_bw()  
  coord_flip()  
  labs(
    title = "Cognitive domains in baseline groups",
    y = "Z score"
  )

^{Created on 2022-04-20 by the reprex package (v2.0.1)}