Creating graph.data.frame to generate genealogic tree

Asked Jan 15 '20 at 15:26

Active Jan 15 '20 at 17:52

Viewed 92 times

Hello I would create genealogic tree from my data using ggenealogy. I am stacked on the begging, when I try to create igraph. My data (small part).

df<-data.frame(child=c("82Y-02938", "82Y-02939","82Y-02938", "82Y-02939"), parent=c("81Y-02080", "81Y-02439", "81Y-02080", "81Y-02439"))

ig<-dfToIG(dff)

and I get the error Error in igraph::graph.data.frame(d = edges, directed = isDirected, vertices = nodes) : Some vertex names in edge list are not listed in vertex data frame

I have no idea, what is wrong. Thanks for a help

Problem Solved

It is necessery to have also parents in child (=vertex) column and for them to have NA as parents.

df<-data.frame(child=c("82Y-02938", "82Y-02939","82Y-02938", "82Y-02939","81Y-02080", "81Y-02439"), parent=c("81Y-02080", "81Y-02439", "81Y-02080", "81Y-02439",NA,NA))

edited Jan 15 '20 at 17:52

asked Jan 15 '20 at 15:26

Vendula Novosadova

1

igraph does not have a function called `dfToIG`. where did you get that function? Or did you mean `graph_from_data_frame`? – G5W Jan 15 '20 at 15:41
`g <- graph_from_data_frame(df, directed = FALSE)`. – Rui Barradas Jan 15 '20 at 15:49
I used function dfToIG becouse it is part of package ggeenealogy and use directly function graph.data.frame – Vendula Novosadova Jan 15 '20 at 17:49

Creating graph.data.frame to generate genealogic tree

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