addEsriDynamicMapLayer: Render and visualize Map Services from ArcGIS Online and...

In leaflet.esri: 'ESRI' Bindings for the 'leaflet' Package

Description

Map Services are a way to expose the contents of a map as a web service and expose capabilities for exporting tile images, querying and identifying features and more. Also supports custom popups and identification of features.

Usage

addEsriDynamicMapLayer(map, url, options = dynamicMapLayerOptions(),
  popupFunction = NULL, popupOptions = NULL, layerId = NULL,
  group = NULL)

Arguments

map	The leaflet map
url	URL of the Map Service.
options	options for the dynamic map layer.
popupFunction	Uses the provided function to create a popup that will identify features whenever the map is clicked. Your function will be passed a GeoJSON FeatureCollection of the features at the clicked location and should return the appropriate HTML. If you do not want to open the popup when there are no results, return false.
popupOptions	See popupOptions.
layerId	A unique ID for the layer.
group	The name of the group this layer should be added to.

Examples

popupFunc <- htmlwidgets::JS(
  "function (error, featureCollection) {
    if (error || featureCollection.features.length === 0) {
      return false;
    } else {
    return \"Risk Level: \" + featureCollection.features[0].properties.CLASS_DESC;
    }
  }")

leaflet() %>% setView(-96.8, 38.5, 4) %>%
  addEsriBasemapLayer(esriBasemapLayers$Gray, autoLabels = TRUE) %>%
  addEsriDynamicMapLayer(
    url = paste0("https://maps7.arcgisonline.com/arcgis/rest/services/",
                 "USDA_USFS_2014_Wildfire_Hazard_Potential/MapServer"),
    popupFunction = popupFunc)

## for more examples see
# browseURL(system.file("examples/dynamicMapLayers.R", package = "leaflet.esri"))

Example output

Loading required package: leaflet
Loading required package: leaflet.extras

leaflet.esri documentation built on May 2, 2019, 2:39 a.m.