# plot.igraph {igraph}

### Description

`plot.graph`

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

function.

### Usage

## S3 method for class '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 `tkplot.getcoords`

function and use them with `plot`

to plot the graph to any R device.

### Values

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

g <- graph.ring(10) ## Not run:plot(g, layout=layout.kamada.kawai, vertex.color="green")## End(Not run)

Documentation reproduced from package igraph, version 0.7.0. License: GPL (>= 2)