I have two data sets, one is for males and one for females. They both have 4 variables, which are: Year, DK, SE NO. So they both looks like this (of course just with different values):

I want to make line plots for Males and Females stacked and grouped into contries, DK SE and NO. So it can be stacked plots, like this:

CodePudding user response:
You haven't told us what your data frames are called, but let's call them men and women. As long as they both have exactly the same columns (including names), you can do:
library(tidyverse)
men %>%
mutate(Sex = "Men") %>%
bind_rows(women %>% mutate(Sex = "Women")) %>%
pivot_longer(c("DK", "SE", "NO")) %>%
ggplot(aes(Year, value, colour = name))
geom_line()
facet_grid(Sex~.)
theme_light()

Created on 2022-04-22 by the reprex package (v2.0.1)
Made up data with same structure as question data
set.seed(1)
men <- data.frame(Year = 1995:2022,
DK = 35 cumsum(rnorm(28)),
SE = 40 cumsum(rnorm(28)),
NO = 38 cumsum(rnorm(28)))
women <- data.frame(Year = 1995:2022,
DK = 35 cumsum(rnorm(28)),
SE = 40 cumsum(rnorm(28)),
NO = 38 cumsum(rnorm(28)))
