Add Nodes to a Network

Add Nodes to a Network

Usage

add_nodes(x, labels, ..., keep_format = FALSE, directed = NULL)

Arguments

x

Network input.

labels

Character vector of labels for the new nodes.

...

Named vectors of node attributes for the new nodes, each of length 1 (recycled) or length(labels). Columns the network does not already have are created and filled with NA for the existing nodes.

keep_format

Logical. Return the input format when TRUE.

directed

Logical or NULL. If NULL (default), auto-detect.

Value

A cograph_network with the new nodes appended (isolated until edges are added), or the input format when keep_format = TRUE.

See also

remove_nodes, add_edges, mutate_nodes

Examples

adj <- matrix(c(0, 1, 1, 0), 2, 2)
rownames(adj) <- colnames(adj) <- c("A", "B")

add_nodes(adj, labels = c("C", "D"))
#> Cograph network: 4 nodes, 1 edges ( undirected )
#> Source: matrix 
#>   Nodes (4): A, B, C, D
#>   Edges: 1 / 6 (density: 16.7%)
#>   Weights: [1.000, 1.000]  |  mean: 1.000
#>   Strongest edges:
#>     A -- B  1.000
#> Layout: none 
#>   Use as.data.frame() for the edge table, as.data.frame(what = "nodes") for the nodes.
add_nodes(adj, labels = "C", group = "new")
#> Cograph network: 3 nodes, 1 edges ( undirected )
#> Source: matrix 
#>   Nodes (3): A, B, C
#>   Edges: 1 / 3 (density: 33.3%)
#>   Weights: [1.000, 1.000]  |  mean: 1.000
#>   Strongest edges:
#>     A -- B  1.000
#> Layout: none 
#>   Use as.data.frame() for the edge table, as.data.frame(what = "nodes") for the nodes.