Add a line layer — add_lines • maplamina

Adds a GPU-rendered line/path layer.

Usage

add_lines(
  map,
  data = NULL,
  color = "#3388ff",
  opacity = 1,
  width = 1,
  tooltip = NULL,
  popup = NULL,
  id = NULL,
  group = NULL,
  pickable = TRUE,
  width_units = c("pixels", "meters", "common"),
  width_min_pixels = NULL,
  width_max_pixels = NULL
)

Arguments

map: A maplamina widget created by maplamina().
data: Data for this layer. Typically an sf object with LINESTRING geometry.
color, opacity, width: Line color/opacity/width.
tooltip, popup: Optional tmpl() objects (or NULL) for hover/click content.
id, group: Optional layer id and group name.
pickable: Logical; whether features can be picked (tooltip/popup).
width_units: Units for width; one of "meters", "pixels", or "common".
width_min_pixels, width_max_pixels: Optional clamp in pixels when using meter/common units.

Value

The modified map widget.

Examples

if (requireNamespace("sf", quietly = TRUE)) {
  ln <- sf::st_sfc(
    sf::st_linestring(matrix(c(-122.4, 37.8, -122.5, 37.85), ncol = 2, byrow = TRUE)),
    crs = 4326
  )
  ln <- sf::st_sf(id = 1, geometry = ln)

  maplamina(ln) |>
    add_lines(color = "black", width = 3)
}