Add a GPU Instanced Point Layer (Handles 1M+ Points at 60 FPS)

Streams points as a zero-copy GLMP binary Float32Array buffer directly to a custom WebGL2 instanced point shader (with anti-aliased SDF circles, stroke outlines, variable radius, and interactive picking).

Usage

add_points(
  map,
  data = NULL,
  lon = NULL,
  lat = NULL,
  color = "#00d4ff",
  palette = "viridis",
  radius = 5,
  opacity = 0.85,
  stroke = TRUE,
  stroke_color = "#ffffff",
  stroke_width = 1,
  popup = NULL,
  label = NULL,
  id = NULL,
  group = NULL,
  dynamic_viewport = FALSE,
  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.
color: Color string, formula (~val), or column name.
palette: Color palette name ("viridis", "plasma", "magma", "turbo", "Spectral", etc.).
radius: Point radius in pixels (single number, formula ~size, or numeric vector).
opacity: Numeric fill opacity (0 to 1).
stroke: Logical; whether to draw a crisp anti-aliased stroke around each point.
stroke_color: Stroke color string (default "#ffffff").
stroke_width: Stroke width in pixels (default 1.0).
popup: Optional formula (~name), column name, or character vector for click/hover tooltips.
label: Alias for popup.
id: Layer ID string.
group: Layer group name shown in the interactive layer switcher.
dynamic_viewport: Logical; if TRUE, builds an in-memory C++ spatial index and streams only the visible viewport slice via the local httpuv server.
legend: Logical; whether to automatically add a legend when color is mapped to data.

Value

Updated glmap map object.