`plot.igraph()`

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

function.

## 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

`graphics::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

`graphics::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.

- loop.size
A numeric scalar that allows the user to scale the loop edges of the network. The default loop size is 1. Larger values will produce larger loops.

- ...
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.

## 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.

Other plot:
`rglplot()`

## Author

Gabor Csardi csardi.gabor@gmail.com