# is_igraph

From igraph v1.2.4.2
by Gabor Csardi

##### Is this object an igraph graph?

Is this object an igraph graph?

- Keywords
- graphs

##### Usage

`is_igraph(graph)`

##### Arguments

- graph
An R object.

##### Value

A logical constant, `TRUE`

if argument `graph`

is a graph
object.

##### Examples

```
# NOT RUN {
g <- make_ring(10)
is_igraph(g)
is_igraph(numeric(10))
# }
```

*Documentation reproduced from package igraph, version 1.2.4.2, License: GPL (>= 2)*

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