Create a raster layer from a raster image service.

Use case
Accessing a raster image from an online service can be useful for analysing the most up-to-date data available for an area. For example, retrieving recent results of bathymetry surveys within a shipping channel monitored for its sediment build-up would allow planners to assess dredging needs.
How to use the sample
Simply launch the sample to see a raster from an image service being used on a map.
How it works
To add a RasterLayer as an operational layer from an ImageServiceRaster:
- Create an
ImageServiceRasterusing the service’s URL - Create a
RasterLayerfrom the raster - Add it as an operational layer with
map.getOperationalLayers().add(rasterLayer)
Relevant API
- ImageServiceRaster
- RasterLayer
About the data
This sample uses a NOAA raster image service. The service computes a hillshade image from the depth (in meters) of U.S. coastal waters.
Tags
image service, raster
Sample Code
/* * Copyright 2022 Esri. * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */
module com.esri.samples.raster_layer_url { // require ArcGIS Maps SDK for Java module requires com.esri.arcgisruntime;
// handle SLF4J http://www.slf4j.org/codes.html#StaticLoggerBinder requires org.slf4j.nop;
// require JavaFX modules that the application uses requires javafx.graphics; requires javafx.controls;
exports com.esri.samples.raster_layer_url;}/* * Copyright 2017 Esri. * * Licensed under the Apache License, Version 2.0 (the "License"); you may not * use this file except in compliance with the License. You may obtain a copy of * the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the * License for the specific language governing permissions and limitations under * the License. */
package com.esri.samples.raster_layer_url;
import javafx.application.Application;import javafx.scene.Scene;import javafx.scene.control.Alert;import javafx.scene.layout.StackPane;import javafx.stage.Stage;
import com.esri.arcgisruntime.ArcGISRuntimeEnvironment;import com.esri.arcgisruntime.geometry.Point;import com.esri.arcgisruntime.geometry.SpatialReferences;import com.esri.arcgisruntime.layers.RasterLayer;import com.esri.arcgisruntime.loadable.LoadStatus;import com.esri.arcgisruntime.mapping.ArcGISMap;import com.esri.arcgisruntime.mapping.BasemapStyle;import com.esri.arcgisruntime.mapping.view.MapView;import com.esri.arcgisruntime.raster.ImageServiceRaster;
public class RasterLayerURLSample extends Application {
private MapView mapView; private RasterLayer rasterLayer; // keep loadable in scope to avoid garbage collection
@Override public void start(Stage stage) {
try { // create stack pane and application scene StackPane stackPane = new StackPane(); Scene scene = new Scene(stackPane);
// set title, size, and add scene to stage stage.setTitle("Raster Layer URL Sample"); stage.setWidth(800); stage.setHeight(700); stage.setScene(scene); stage.show();
// authentication with an API key or named user is required to access basemaps and other location services String yourAPIKey = System.getProperty("apiKey"); ArcGISRuntimeEnvironment.setApiKey(yourAPIKey);
// create an image service raster from an online raster service ImageServiceRaster imageServiceRaster = new ImageServiceRaster("https://gis.ngdc.noaa.gov/arcgis/rest/services/bag_hillshades_subsets/ImageServer");
// create a raster layer rasterLayer = new RasterLayer(imageServiceRaster);
rasterLayer.addDoneLoadingListener(() -> { if (rasterLayer.getLoadStatus() != LoadStatus.LOADED) { new Alert(Alert.AlertType.ERROR, "Raster layer failed to load").show(); } });
// create a map with the dark gray basemap style ArcGISMap map = new ArcGISMap(BasemapStyle.ARCGIS_DARK_GRAY);
// create a map view and set the map to it mapView = new MapView(); mapView.setMap(map);
// zoom in to the San Francisco Bay mapView.setViewpointCenterAsync(new Point(-13643095.660131, 4550009.846004, SpatialReferences.getWebMercator()), 100000);
// add the raster layer as an operational layer map.getOperationalLayers().add(rasterLayer);
// add the map view to stack pane stackPane.getChildren().addAll(mapView); } catch (Exception e) { // on any error, display the stack trace. e.printStackTrace(); } }
/** * Stops and releases all resources used in application. */ @Override public void stop() {
if (mapView != null) { mapView.dispose(); } }
/** * Opens and runs application. * * @param args arguments passed to this application */ public static void main(String[] args) {
Application.launch(args); }
}