From a graph object of class dgr_graph, bind a data frame as an edge attribute property for one given graph edge. The data frames are stored in list columns within a df_tbl object, itself residing within the graph object. A df_id value is generated and serves as a pointer to the table row that contains the ingested data frame.

set_df_as_edge_attr(graph, edge, df)

Arguments

graph

a graph object of class dgr_graph.

edge

the edge ID to which the data frame will be bound as an attribute.

df

the data frame to be bound to the edge as an attribute.

Value

a graph object of class dgr_graph.

Examples

# Create a node data frame (ndf) ndf <- create_node_df( n = 4, type = "basic", label = TRUE, value = c(3.5, 2.6, 9.4, 2.7)) # Create an edge data frame (edf) edf <- create_edge_df( from = c(1, 2, 3), to = c(4, 3, 1), rel = "leading_to") # Create a graph graph <- create_graph( nodes_df = ndf, edges_df = edf) # Create a simple data frame to add as # an edge attribute df <- data.frame( a = c("one", "two", "three"), b = c(1, 2, 3), stringsAsFactors = FALSE) # Bind the data frame as an edge attribute # to the edge with ID `1` graph <- graph %>% set_df_as_edge_attr( edge = 1, df = df)