Add an sf object to a GeoLibre map — add

The object is transformed to EPSG:4326 before serialization. An object with no CRS is taken to be in longitude/latitude order already, since that is what GeoJSON means.

Usage

add_sf(
  map,
  data,
  name = NULL,
  style = list(),
  visible = TRUE,
  opacity = 1,
  ...
)

Arguments

map: A GeoLibre widget.
data: An sf, sfc, or sfg object.
name: Layer name. Defaults to the expression passed as data.
style: Named list of GeoLibre style overrides such as fillColor, strokeColor, and strokeWidth.
visible: Whether the layer is initially visible.
opacity: Layer opacity from zero to one.
...: Additional style overrides given as named arguments, merged into style. add_geojson(map, data, fillColor = "red") and add_geojson(map, data, style = list(fillColor = "red")) are equivalent.

Value

The modified widget.

Examples

if (requireNamespace("sf", quietly = TRUE)) {
  point <- sf::st_sf(
    name = "Washington, DC",
    geometry = sf::st_sfc(sf::st_point(c(-77.0369, 38.9072)), crs = 4326)
  )
  map <- geolibre() |> add_sf(point, name = "Places")
}