R: Plotting of graphs

plot.igraph {igraph} | R Documentation

## Plotting of graphs

### Description

`plot.igraph` 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 `tk_coords` function and use them with `plot` to plot the graph to any R device.

### Value

Returns `NULL`, invisibly.

### Author(s)

Gabor Csardi csardi.gabor@gmail.com

### 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 <- make_ring(10)
    plot(g, layout=layout_with_kk, vertex.color="green")

[Package igraph version 1.3.1 Index]