# create_edge_df: Create an edge data frame In DiagrammeR: Graph/Network Visualization

## Description

Combine several vectors for edges and their attributes into a data frame, which can be combined with other similarly-generated data frames, or, added to a graph object. An edge data frame, or edf, has at least the following columns:

## Usage

 1 create_edge_df(from, to, rel = NULL, ...) 

## Arguments

 from A vector of node ID values from which edges are outbound. The vector length must equal that of the to vector. to A vector of node ID values to which edges are incoming. The vector length must equal that of the from vector. rel An optional rel label for each edge. ... One or more vectors for associated edge attributes.

## Details

• id (of type integer)

• from (of type integer)

• to (of type integer)

• rel (of type character)

An arbitrary number of additional columns containing aesthetic or data attributes can be part of the edf, so long as they follow the aforementioned columns.

## Value

An edge data frame (edf).

Other Edge creation and removal: add_edge_clone(), add_edge_df(), add_edges_from_table(), add_edges_w_string(), add_edge(), add_forward_edges_ws(), add_reverse_edges_ws(), copy_edge_attrs(), delete_edges_ws(), delete_edge(), delete_loop_edges_ws(), drop_edge_attrs(), edge_data(), join_edge_attrs(), mutate_edge_attrs_ws(), mutate_edge_attrs(), recode_edge_attrs(), rename_edge_attrs(), rescale_edge_attrs(), rev_edge_dir_ws(), rev_edge_dir(), set_edge_attr_to_display(), set_edge_attrs_ws(), set_edge_attrs()
  1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 # Create a simple edge data frame (edf) and # view the results edf <- create_edge_df( from = c(1, 2, 3), to = c(4, 3, 1), rel = "a") # Display the edge data frame edf # Create an edf with additional edge # attributes (where their classes will # be inferred from the input vectors) edf <- create_edge_df( from = c(1, 2, 3), to = c(4, 3, 1), rel = "a", length = c(50, 100, 250), color = "green", width = c(1, 5, 2)) # Display the edge data frame edf