R: Create a node extractor function

get_nodes {ggraph} | R Documentation

## Create a node extractor function

### Description

This function returns another function that can extract nodes from a ggraph_layout object. As a ggraph_layout object is essentially a data.frame of nodes it might seem useless to provide this function, but since the node data is not necessarily available until after the `ggraph()` call it can be beneficial to be able to add information to the node data on a per-layer basis. Unlike `get_edges()` the use of `get_nodes` is not mandatory and is only required if additional data should be added to selected node layers.

### Usage

    get_nodes(...)

### Arguments

`...` | Additional data that should be cbind'ed together with the node data.

### Value

A data.frame with the node data as well of any additional data supplied through `...`

### See Also

Other extractors: `get_con()`, `get_edges()`

[Package ggraph version 2.0.2 Index]