hydro_coords returns a tibble with the stations'
longitude and latitude using as input the variable point
from get_stations function.
hydro_coords(x)a tibble with the longitude and latitude values.
if (FALSE) { # \dontrun{
# get stations from the Greek Ministry of Environment and Energy
kyy_stations <- get_stations("kyy")
# create a tibble with stations' coords
coords <- hydro_coords(kyy_stations$point)
} # }