Add a C++ Accelerated Hexagonal Binning Layer for 1M+ Points

Aggregates millions of points into hexagonal spatial bins in C++17 in milliseconds and renders them on the GPU with color and optional 3D extrusion mapped to count or weight.

Usage

add_hexbin(
  map,
  data = NULL,
  lon = NULL,
  lat = NULL,
  weight = NULL,
  hex_radius = 0.03,
  palette = "plasma",
  opacity = 0.85,
  extrude = FALSE,
  id = NULL,
  group = NULL,
  legend = TRUE
)

Arguments

map

A glmap widget or glmap_proxy.

data

An sf, sfc, or data.frame object.

lon

Optional longitude column name or formula (~lon) for data.frame.

lat

Optional latitude column name or formula (~lat) for data.frame.

weight

Optional numeric column/formula to average inside each hex cell.

hex_radius

Hexagon radius in degrees (default 0.03).

palette

Color palette name ("viridis", "plasma", "magma", "turbo", "Spectral", etc.).

opacity

Numeric fill opacity (0 to 1).

extrude

Logical; if TRUE, extrudes hex bins based on point count.

id

Layer ID string.

group

Layer group name shown in the interactive layer switcher.

legend

Logical; whether to automatically add a legend when color is mapped to data.