Combine several vectors for nodes and their attributes into a data frame, which can be combined with other similarly-generated data frames, or, added to a graph object. A node data frame, or ndf, has at least the following columns:
- id
(of type integer
)
- type
(of type character
)
- label
(of type character
)
An arbitrary number of additional columns containing aesthetic or data attributes can be part of the ndf, so long as they follow the aforementioned columns.
create_node_df(n, type = NULL, label = NULL, ...)
n | the total number of nodes to include in the node data frame. |
---|---|
type | an optional |
label | an optional |
... | one or more vectors for associated node attributes. |
a node data frame (ndf).
# Create a node data frame (ndf) where the labels # are equivalent to the node ID values (this is not # recommended); the `label` and `type` node # attributes will always be a `character` class # whereas `id` will always be an `integer` node_df <- create_node_df( n = 4, type = c("a", "a", "b", "b"), label = TRUE) # Display the node data frame node_df#> id type label #> 1 1 a 1 #> 2 2 a 2 #> 3 3 b 3 #> 4 4 b 4# Create an ndf with distinct labels and # additional node attributes (where their classes # will be inferred from the input vectors) node_df <- create_node_df( n = 4, type = "a", label = c(2384, 3942, 8362, 2194), style = "filled", color = "aqua", shape = c("circle", "circle", "rectangle", "rectangle"), value = c(3.5, 2.6, 9.4, 2.7)) # Display the node data frame node_df#> id type label style color shape value #> 1 1 a 2384 filled aqua circle 3.5 #> 2 2 a 3942 filled aqua circle 2.6 #> 3 3 a 8362 filled aqua rectangle 9.4 #> 4 4 a 2194 filled aqua rectangle 2.7