# plot.igraph

##### Plotting of graphs

`plot.igraph`

is able to plot graphs to any R device. It is the
non-interactive companion of the `tkplot`

function.

- Keywords
- graphs

##### Usage

```
# S3 method for igraph
plot(x, axes = FALSE, add = FALSE, xlim = c(-1, 1),
ylim = c(-1, 1), mark.groups = list(), mark.shape = 1/2,
mark.col = rainbow(length(mark.groups), alpha = 0.3),
mark.border = rainbow(length(mark.groups), alpha = 1), mark.expand = 15,
...)
```

##### Arguments

- x
The graph to plot.

- axes
Logical, whether to plot axes, defaults to FALSE.

- add
Logical scalar, whether to add the plot to the current device, or delete the device's current contents first.

- xlim
The limits for the horizontal axis, it is unlikely that you want to modify this.

- ylim
The limits for the vertical axis, it is unlikely that you want to modify this.

- mark.groups
A list of vertex id vectors. It is interpreted as a set of vertex groups. Each vertex group is highlighted, by plotting a colored smoothed polygon around and “under” it. See the arguments below to control the look of the polygons.

- mark.shape
A numeric scalar or vector. Controls the smoothness of the vertex group marking polygons. This is basically the ‘shape’ parameter of the

`xspline`

function, its possible values are between -1 and 1. If it is a vector, then a different value is used for the different vertex groups.- mark.col
A scalar or vector giving the colors of marking the polygons, in any format accepted by

`xspline`

; e.g. numeric color ids, symbolic color names, or colors in RGB.- mark.border
A scalar or vector giving the colors of the borders of the vertex group marking polygons. If it is

`NA`

, then no border is drawn.- mark.expand
A numeric scalar or vector, the size of the border around the marked vertex groups. It is in the same units as the vertex sizes. If a vector is given, then different values are used for the different vertex groups.

- …
Additional plotting parameters. See igraph.plotting for the complete list.

##### Details

One convenient way to plot graphs is to plot with `tkplot`

first, handtune the placement of the vertices, query the coordinates by the
`tk_coords`

function and use them with `plot`

to
plot the graph to any R device.

##### Value

Returns `NULL`

, invisibly.

##### See Also

`layout`

for different layouts,
`igraph.plotting`

for the detailed description of the plotting
parameters and `tkplot`

and `rglplot`

for other
graph plotting functions.

##### Examples

```
# NOT RUN {
g <- ring(10)
# }
# NOT RUN {
plot(g, layout=layout_with_kk, vertex.color="green")
# }
```

*Documentation reproduced from package igraph, version 1.0.1, License: GPL (>= 2)*