addNodes: Add nodes to graph.
In grapherator: A Modular Multi-Step Graph Generator

Description Usage Arguments Value See Also Examples

Places node coordinates in the two-dimensional Euclidean plane.

1 2	addNodes(graph, n, generator, coordinates = NULL, by.centers = FALSE, skip.centers = integer(0L), par.fun = NULL, ...)

`graph`	[`grapherator`] Graph.
`n`	[`integer`] Number of nodes to place. If `by.centers` is `FALSE` a single integer value is expected. Otherwise, a vector v may be passed. In this case v[i] coordinates are generated for each cluster. However, if a single value is passed and `by.center == TRUE`, each cluster is assigned the same number of nodes.
`generator`	[`function(graph, ...)`] Function used to generate nodes. The functions needs to expect the number of points to generate as the first argument `n`. Additional control argument are possible.
`coordinates`	[`matrix(n, 2)`] Matrix of coordinates (each row is one node/point). Default is `NULL`. If this is set, setting of `generator`, `by.centers`, and `par.fun` are ignored. This parameter is handy, if one wants to add coordinates by hand. Default is `NULL`.
`by.centers`	[`logical(1)`] Should coordinates be placed for each cluster center seperately? This enables generation of clustered graphs. Default is `FALSE`.
`skip.centers`	[`integer`] Optional IDs of cluster centers not to consider in clustered node generation, i.e., if `by.centers = TRUE`. Default is not to skip any cluster.
`par.fun`	[`function(cc) \| NULL`] Optional function which is applied to each cluster center before the generation of coordinates in case `by.centers` is `TRUE`. This enables to specifically determine additional parameters for the `generator` for each cluster.
`...`	[any] Further arguments passed down to `generator`.

[grapherator] Graph.

Other graph generators: addEdges, addWeights, graph

# Clustered graph
g = graph(0, 1000)
g = addNodes(g, n = 5, generator = addNodesLHS)
g = addNodes(g, n = c(3, 10, 20, 10, 40), by.centers = TRUE, generator = addNodesUniform,
 lower = c(0, 0), upper = c(30, 30))
## Not run: 
plot(g, show.edges = FALSE)$pl.coords

## End(Not run)

# Mixed graph
g = graph(0, 100)
g = addNodes(g, n = 100, generator = addNodesLHS)
g = addNodes(g, n = 100, generator = addNodesGrid)

## Not run: 
plot(g, show.edges = FALSE)$pl.coords

## End(Not run)