Lines representing the Seine, Marne and Yonne rivers.
Examples
if (requireNamespace("sf", quietly = TRUE)) {
  library(sf)
  seine
  plot(seine)
}
 if (FALSE) { # \dontrun{
library(sf)
library(rnaturalearth)
library(tidyverse)
seine = ne_download(scale = 10, type = "rivers_lake_centerlines", 
                    category = "physical", returnclass = "sf") %>% 
        filter(name %in% c("Yonne", "Seine", "Marne")) %>% 
        select(name = name_en) %>% 
        st_transform(2154)
} # }
if (FALSE) { # \dontrun{
library(sf)
library(rnaturalearth)
library(tidyverse)
seine = ne_download(scale = 10, type = "rivers_lake_centerlines", 
                    category = "physical", returnclass = "sf") %>% 
        filter(name %in% c("Yonne", "Seine", "Marne")) %>% 
        select(name = name_en) %>% 
        st_transform(2154)
} # }
