build_legend_data: Build legend data structure

In ggseg3d: Interactive 3D Brain Atlas Visualization

Build legend data structure

Description

Creates the appropriate legend data structure based on whether the colour variable is numeric (continuous colorbar) or categorical (discrete legend).

Usage

build_legend_data(
  is_numeric,
  data_min,
  data_max,
  palette,
  pal_colours,
  colour_col,
  label_col,
  fill_col,
  data
)

Arguments

is_numeric	Whether the colour variable is numeric
data_min	Minimum data value (for continuous)
data_max	Maximum data value (for continuous)
palette	Original palette specification
pal_colours	Processed palette colours
colour_col	Name of the colour column
label_col	Name of the label column
fill_col	Name of the fill column
data	Atlas data

Value

List with legend specification or NULL

ggseg3d documentation built on Feb. 21, 2026, 1:06 a.m.