Within a graph's internal edge data frame (edf), copy the contents an existing edge attribute and create a distinct edge attribute within the edf with a different attribute name.

copy_edge_attrs(graph, edge_attr_from, edge_attr_to)

Arguments

graph

a graph object of class dgr_graph.

edge_attr_from

the name of the edge attribute column from which values will be copied.

edge_attr_to

the name of the new edge attribute column to which the copied values will be placed.

Value

a graph object of class dgr_graph.

Examples

# Create a random graph using the # `add_gnm_graph()` function graph <- create_graph() %>% add_gnm_graph( n = 5, m = 8, set_seed = 23) %>% set_edge_attrs( edge_attr = color, values = "green") # Get the graph's internal # edf to show which edge # attributes are available graph %>% get_edge_df()
#> id from to rel color #> 1 1 1 3 <NA> green #> 2 2 2 1 <NA> green #> 3 3 2 5 <NA> green #> 4 4 2 3 <NA> green #> 5 5 3 2 <NA> green #> 6 6 3 5 <NA> green #> 7 7 3 4 <NA> green #> 8 8 5 3 <NA> green
# Make a copy the `color` # edge attribute as the # `color_2` edge attribute graph <- graph %>% copy_edge_attrs( edge_attr_from = color, edge_attr_to = color_2) # Get the graph's internal # edf to show that the edge # attribute had been copied graph %>% get_edge_df()
#> id from to rel color color_2 #> 1 1 1 3 <NA> green green #> 2 2 2 1 <NA> green green #> 3 3 2 5 <NA> green green #> 4 4 2 3 <NA> green green #> 5 5 3 2 <NA> green green #> 6 6 3 5 <NA> green green #> 7 7 3 4 <NA> green green #> 8 8 5 3 <NA> green green