set_node_attrs {DiagrammeR} | R Documentation |
From a graph object of
class dgr_graph
, set node
attribute values for one or more
nodes.
set_node_attrs(graph, node_attr, values, nodes = NULL)
graph |
a graph object of
class |
node_attr |
the name of the attribute to set. |
values |
the values to be set for the chosen attribute for the chosen nodes. |
nodes |
an optional vector of node IDs for filtering the list of nodes present in the graph. |
a graph object of class
dgr_graph
.
# 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) # Set attribute `color = "green"` for # nodes `1` and `3` using the graph object graph <- graph %>% set_node_attrs( node_attr = color, values = "green", nodes = c(1, 3)) # View the graph's node data frame graph %>% get_node_df() # Set attribute `color = "blue"` for # all nodes in the graph graph <- graph %>% set_node_attrs( node_attr = color, values = "blue") # Display the graph's ndf graph %>% get_node_df()