How to plot family tree in R <p>I've been searching around how to plot a family tree but couldn't find something i could reproduce. I've been looking in Hadley's book about ggplot but the same thing.</p> <p>I want to plot a family tree having as a source a dataframe similar to this:</p> <pre><code>dput(head(familyTree)) structure( list( id = 1:6, cnp = c("11", NA, "22", NA, NA, "33"), last_name = c("B", "B", "B", NA, NA, "M"), last_name_alyas = c(NA, NA, NA, NA, NA, "M"), middle_name = c("C", NA, NA, NA, NA, NA), first_name = c("Me", "P", "A", NA, NA, "S"), first_name_alyas = c(NA, NA, NA, NA, NA, "F"), maiden_name = c(NA, NA, "M", NA, NA, NA), id_father = c(2L, 4L, 6L, NA, NA, 8L), id_mother = c(3L, 5L, 7L, NA, NA, 9L), birth_date = c("1986-01-01", "1963-01-01", "1964-01-01", NA, NA, "1936-01-01"), birth_place = c("City", "Village", "Village", NA, NA, "Village"), death_date = c("0000-00-00", NA, NA, NA, NA, "2007-12-23"), death_reason = c(NA, NA, NA, NA, NA, "stroke"), nr_brothers = c(NA, 1L, NA, NA, NA, NA), brothers_names = c(NA, "M", NA, NA, NA, NA), nr_sisters = c(1L, NA, 1L, NA, NA, 2L), sisters_names = c("A", NA, "E", NA, NA, NA), school = c(NA, "", "", NA, NA, ""), occupation = c(NA, "", "", NA, NA, ""), diseases = c(NA_character_, NA_character_, NA_character_, NA_character_, NA_character_, NA_character_), comments = c(NA_character_, NA_character_, NA_character_, NA_character_, NA_character_, NA_character_) ), .Names = c("id", "cnp", "last_name", "last_name_alyas", "middle_name", "first_name", "first_name_alyas", "maiden_name", "id_father", "id_mother", "birth_date", "birth_place", "death_date", "death_reason", "nr_brothers", "brothers_names", "nr_sisters", "sisters_names", "school", "occupation", "diseases", "comments"), row.names = c(NA, 6L), class = "data.frame" ) </code></pre> <p>Is there any way I can plot a family tree with ggplot? If not, how can i plot it using another package.</p> <p>The primary key is 'id' and you connect to other members of the family using "id_father" and "id_mother".</p>