Add GeoJSON to a GeoLibre map

Add GeoJSON to a GeoLibre map

Usage

add_geojson(
  map,
  data,
  name = "GeoJSON",
  style = list(),
  visible = TRUE,
  opacity = 1,
  ...
)

Arguments

map

A GeoLibre widget.

data

GeoJSON as a parsed list (a FeatureCollection, Feature, or bare geometry), a JSON string, a file path, an HTTP(S) URL, or an sf object. A URL or file is read and inlined into the project, up to a 50 MB limit; for larger datasets prefer add_vector(), which lets the browser stream the source.

name

Layer name.

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.

See also

add_sf(), add_choropleth(), add_vector()

Examples

point <- list(
  type = "Feature",
  properties = list(name = "Washington, DC"),
  geometry = list(type = "Point", coordinates = c(-77.0369, 38.9072))
)
map <- geolibre() |> add_geojson(point, name = "Places", fillColor = "#dc2626")
stopifnot(length(map$x$project$layers) == 1L)