# Get all nodes connected to a specified node

Source:`R/get_all_connected_nodes.R`

`get_all_connected_nodes.Rd`

With a single node serving as the starting point get all nodes connected (i.e., reachable with a traversable path) to that node.

## Arguments

- graph
A graph object of class

`dgr_graph`

.- node
a single-length vector containing a node ID value.

## Examples

```
# Create a random graph using the
# `add_gnm_graph()` function; it
# has an unconnected node (`6`)
graph_1 <-
create_graph() %>%
add_gnm_graph(
n = 20,
m = 32,
set_seed = 23)
# There won't be any connected
# nodes to `6` so when specifying
# this node with `get_all_connected_nodes()`
# we get NA back
graph_1 %>%
get_all_connected_nodes(
node = 6)
#> [1] NA
# Any other node in `graph_1` will
# provide a vector of all the nodes
# other than `6`
graph_1 %>%
get_all_connected_nodes(
node = 1)
#> [1] 2 3 4 5 7 8 9 10 11 12 13 14 15 16 17 18 19 20
# The following graph has two
# clusters of nodes (i.e., the
# graph has two connected components)
graph_2 <-
create_graph() %>%
add_path(n = 6) %>%
add_path(n = 4)
# In `graph_2`, node `1` is in
# the larger of the two
# connected components
graph_2 %>%
get_all_connected_nodes(
node = 1)
#> [1] 2 3 4 5 6
# Also in `graph_2`, node `8`
# is in the smaller of the two
# connected components
graph_2 %>%
get_all_connected_nodes(
node = 8)
#> [1] 7 9 10
```