# is_igraph

From igraph v1.0.0
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

```
g <- make_ring(10)
is_igraph(g)
is_igraph(numeric(10))
```

*Documentation reproduced from package igraph, version 1.0.0, License: GPL (>= 2)*

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