| create_node_df {DiagrammeR} | R Documentation |
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
# 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