ggraph (version 0.1.1)

geom_node_point: Show nodes as points

Description

This geom is equivalent in functionality to geom_point and allows for simple plotting of nodes in different shapes, colours and sizes.

Usage

geom_node_point(mapping = NULL, data = NULL, position = "identity", show.legend = NA, ...)

Arguments

mapping

Set of aesthetic mappings created by aes or aes_. By default x and y are mapped to x and y in the node data.

data

The data to be displayed in this layer. There are three options:

If NULL, the default, the data is inherited from the plot data as specified in the call to ggplot.

A data.frame, or other object, will override the plot data. All objects will be fortified to produce a data frame. See fortify for which variables will be created.

A function will be called with a single argument, the plot data. The return value must be a data.frame., and will be used as the layer data.

position

Position adjustment, either as a string, or the result of a call to a position adjustment function.

show.legend

logical. Should this layer be included in the legends? NA, the default, includes if any aesthetics are mapped. FALSE never includes, and TRUE always includes.

...

other arguments passed on to layer. These are often aesthetics, used to set an aesthetic to a fixed value, like color = "red" or size = 3. They may also be parameters to the paired geom/stat.

Aesthetics

geom_node_point understand the following aesthetics. Bold aesthetics are automatically set, but can be overridden.

• x
• y
• alpha
• colour
• fill
• shape
• size
• stroke
• filter

See Also

Other geom_node_*: geom_node_arc_bar, geom_node_circle, geom_node_text, geom_node_tile

Examples

require(igraph)
gr <- make_graph('bull')
V(gr)$class <- sample(letters[1:3], gorder(gr), replace = TRUE)

ggraph(gr, 'igraph', algorithm = 'nicely') + geom_node_point()