Add Z values to preexisting geometry

[seanreilly66]

Hi,

Thank you for your work on this package. I have a relatively simple question with which I would appreciate your help.

I have an xy point sf object to which I am hoping to add height values from an external vector. I feel like this should be an easy operation but I have not been able to figure out the best way to do so. Any advice would be greatly appreciated.

Here is a demonstration:

library(sf)

sf1 <- data.frame(x = runif(4), y = runif(4)) |>
  st_as_sf(coords = c('x', 'y'))

external_z <- runif(4)

sf1$z <- external_z

# Update geometry in sf1 to xyz with the Z values from "external_z"