Highlight specific nodes in a sunburst or icicle plot — highlight_nodes • ggsunburstR

Adds a geom_rect() layer on top of an existing plot to visually emphasise specific nodes. Works with both sunburst() and icicle() plots.

Usage

highlight_nodes(p, nodes, fill = "gold", colour = "black", linewidth = 0.5)

Arguments

p: A ggplot object produced by sunburst() or icicle().
nodes: Character vector of node names or integer vector of node IDs to highlight.
fill: Fill colour for highlighted nodes. Default "gold".
colour: Border colour for highlighted nodes. Default "black".
linewidth: Border line width for highlighted nodes. Default 0.5.

Value

The input ggplot object with an additional highlight layer.

Examples

sb <- sunburst_data("((a, b, c), (d, e));")
p <- sunburst(sb, fill = "depth")
highlight_nodes(p, nodes = c("a", "c"), fill = "red")