get_edge_attrs_ws {DiagrammeR} | R Documentation |
From a graph object of class
dgr_graph
, get edge attribute values for one
or more edges.
get_edge_attrs_ws(graph, edge_attr)
graph |
a graph object of class
|
edge_attr |
the name of the attribute for which to get values. |
a named vector of edge attribute values for
the attribute given by edge_attr
by edge.
# Create a simple graph where # edges have an edge attribute # named `value` graph <- create_graph() %>% add_n_nodes(n = 4) %>% { edges <- create_edge_df( from = c(1, 2, 1, 4), to = c(2, 3, 4, 3), rel = "rel") add_edge_df( graph = ., edge_df = edges) } %>% set_edge_attrs( edge_attr = value, values = 1.6, from = 1, to = 2) %>% set_edge_attrs( edge_attr = value, values = 4.3, from = 1, to = 4) %>% set_edge_attrs( edge_attr = value, values = 2.9, from = 2, to = 3) %>% set_edge_attrs( edge_attr = value, values = 8.4, from = 4, to = 3) # Select the edges defined as # `1`->`3` and `2`->`3` graph <- graph %>% select_edges( from = c(1, 2), to = c(2, 3)) # Get the edge attribute values # for the `value` attribute, limited # to the current edge selection graph %>% get_edge_attrs_ws( edge_attr = value) #> 1->2 2->3 #> 1.6 2.9