ggraph (version 0.1.1)

geom_axis_hive: Draw rectangular bars and labels on hive axes

Description

This function lets you annotate the axes in a hive plot with labels and color coded bars.

Usage

geom_axis_hive(mapping = NULL, data = NULL, position = "identity", label = TRUE, axis = TRUE, show.legend = NA, ...)

Arguments

mapping

Set of aesthetic mappings created by aes or aes_. If specified and inherit.aes = TRUE (the default), it is combined with the default mapping at the top level of the plot. You must supply mapping if there is no plot mapping.

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.

label

Should the axes be labelled. Defaults to TRUE

axis

Should a rectangle be drawn along the axis. Defaults to TRUE

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_axis_hive understand the following aesthetics.

• alpha
• colour
• fill
• size
• linetype

Examples

# Plot the flare import graph as a hive plot
library(igraph)
flareGr <- graph_from_data_frame(flare$imports)
# Add some metadata to divide nodes by
V(flareGr)$type <- 'Both'
V(flareGr)$type[degree(flareGr, mode = 'in') == 0] <- 'Source'
V(flareGr)$type[degree(flareGr, mode = 'out') == 0] <- 'Sink'
analyticsNodes <- grep('flare.analytics', V(flareGr)$name)
E(flareGr)$type <- 'Other'
E(flareGr)[inc(analyticsNodes)]$type <- 'Analytics'
ggraph(flareGr, 'hive', axis = 'type') +
    geom_edge_hive(aes(colour = type), edge_alpha = 0.1) +
    geom_axis_hive(aes(colour = type)) +
    coord_fixed()