set_node_attrs {DiagrammeR} | R Documentation |
From a graph object of class
dgr_graph
or a node data frame, set node
attribute properties for one or more nodes.
set_node_attrs(x, node_attr, values, nodes = NULL)
x |
either 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. |
either a graph object of class
dgr_graph
or a node data frame, depending on
what type of object was supplied to x
.
# 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 <- set_node_attrs( x = graph, node_attr = "color", values = "green", nodes = c(1, 3)) # View the graph's node data frame get_node_df(graph) #> id type label value color #> 1 1 basic 1 3.5 green #> 2 2 basic 2 2.6 <NA> #> 3 3 basic 3 9.4 green #> 4 4 basic 4 2.7 <NA> # Set attribute `color = "green"` for # nodes `1` and `3` using the node data frame nodes <- set_node_attrs( x = ndf, node_attr = "color", values = "green", nodes = c(1, 3)) # Display the `nodes` ndf nodes #> id type label value color #> 1 1 basic 1 3.5 green #> 2 2 basic 2 2.6 <NA> #> 3 3 basic 3 9.4 green #> 4 4 basic 4 2.7 <NA> # Set attribute `color = "blue"` for # all nodes in the node data frame nodes <- set_node_attrs( x = ndf, node_attr = "color", values = "blue") # Display the `nodes` ndf nodes #> id type label value color #> 1 1 basic 1 3.5 blue #> 2 2 basic 2 2.6 blue #> 3 3 basic 3 9.4 blue #> 4 4 basic 4 2.7 blue