Add, remove, or and set nodes or edges to / from a caugi
object. Edges can be specified using expressions with the infix operators.
Alternatively, the edges to be added are specified using the
from, edge, and to arguments.
Usage
add_edges(cg, ..., from = NULL, edge = NULL, to = NULL, inplace = FALSE)
remove_edges(cg, ..., from = NULL, edge = NULL, to = NULL, inplace = FALSE)
set_edges(cg, ..., from = NULL, edge = NULL, to = NULL, inplace = FALSE)
add_nodes(cg, ..., name = NULL, inplace = FALSE)
remove_nodes(cg, ..., name = NULL, inplace = FALSE)Arguments
- cg
A
caugiobject.- ...
Expressions specifying edges to add using the infix operators, or nodes to add using unquoted names, vectors via
c(), or+composition.- from
Character vector of source node names. Default is
NULL.- edge
Character vector of edge types. Default is
NULL.- to
Character vector of target node names. Default is
NULL.- inplace
DEPRECATED This parameter is deprecated and will be ignored. Graphs are always modified via copy-on-write.
- name
Character vector of node names. Default is
NULL.
Functions
add_edges(): Add edges.remove_edges(): Remove edges.set_edges(): Set edge type for given pair(s).add_nodes(): Add nodes.remove_nodes(): Remove nodes.
See also
Other verbs:
build()
Examples
# initialize empty graph and build slowly
cg <- caugi(class = "PDAG")
cg <- cg |>
add_nodes(c("A", "B", "C", "D", "E")) |> # A, B, C, D, E
add_edges(A %-->% B %-->% C) |> # A --> B --> C, D, E
set_edges(B %---% C) # A --> B --- C, D, E
cg <- remove_edges(cg, B %---% C) |> # A --> B, C, D, E
remove_nodes(c("C", "D", "E")) # A --> B
# Graphs are now built lazily when needed
parents(cg, "B") # triggers compilation
#> [1] "A"