This geom is equivalent in functionality to ggforce::geom_voronoi_tile()
and allows for plotting of nodes as tiles from a voronoi tesselation. As with
ggforce::geom_voronoi_tile()
it is possible to restrict the size of the
tile to a fixed radius, as well as round corners and expand/contract the
tile.
geom_node_voronoi( mapping = NULL, data = NULL, position = "identity", show.legend = NA, bound = NULL, eps = 1e09, max.radius = NULL, normalize = FALSE, asp.ratio = 1, expand = 0, radius = 0, ... )
mapping  Set of aesthetic mappings created by 

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

bound  The bounding rectangle for the tesselation or a custom polygon
to clip the tesselation to. Defaults to 
eps  A value of epsilon used in testing whether a quantity is zero, mainly in the context of whether points are collinear. If anomalous errors arise, it is possible that these may averted by adjusting the value of eps upward or downward. 
max.radius  The maximum distance a tile can extend from the point of
origin. Will in effect clip each tile to a circle centered at the point with
the given radius. If 
normalize  Should coordinates be normalized prior to calculations. If

asp.ratio  If 
expand  A numeric or unit vector of length one, specifying the expansion amount. Negative values will result in contraction instead. If the value is given as a numeric it will be understood as a proportion of the plot area width. 
radius  As 
...  Other arguments passed on to 
geom_node_voronoi
understand the following aesthetics. Bold aesthetics are
automatically set, but can be overridden.
x
y
alpha
colour
fill
shape
size
stroke
filter
Other geom_node_*:
geom_node_arc_bar()
,
geom_node_circle()
,
geom_node_point()
,
geom_node_range()
,
geom_node_text()
,
geom_node_tile()
require(tidygraph) gr < create_notable('meredith') %>% mutate(group = sample(letters[1:4], n(), TRUE)) ggraph(gr) + geom_node_voronoi(aes(fill = group, colour = group), alpha = 0.3) + geom_edge_link(alpha = 0.3) + geom_node_point()#># Use max.radius to make the tesselation more "node"like ggraph(gr) + geom_node_voronoi(aes(fill = group, colour = group), alpha = 0.3, max.radius = 1) + geom_edge_link(alpha = 0.3) + geom_node_point()#>