Help with prunning tree in vtree package

[estevao_vilela]

Hi there,

I'm struggling with prunning a tree with the function vtree with the vtree package. I created a small example of what I'm trying to do:

library(vtree)
library(tidyverse)

df_world <- tibble(continent = c("Asia", "Asia", "Europe", "Europe", "America"),
                   country = c("Japan", "China", "Ukraine", "Spain", "Peru"),
                   pop = c(100, 200, 100, 400, 200),
                   size = c(200, 300, 400, 500, 600),
                   sea = c(1, 1, 0, 1, 0))

vtree::vtree(df_world, "sea continent country pop size",
             horiz = FALSE)

And I want to cut the blue rectangle in the image below:

But if I use something like:

vtree::vtree(df_world, "sea continent country pop size",
             horiz = FALSE,
             prunebelow = list(pop = c(200, 100)))

I cut the leafs from other countries.

How can I do this?
Thanks!