topic open ecw files offline as base map in Java Maps SDK Questions

open ecw files offline as base map

idozoar — Thu, 26 Feb 2015 11:12:57 GMT

Hi,

I'm new to ArcGIS runtime sdk for java.
I need my app to open my own base map that represented by about 6-7 .ecw files (including of course matching .aux files).
How do I add a layer from .ecw file to JMap?
I tried:
JMap map = new JMap(); ... String rasterPath = "k5521.ecw"; //the file is in the folder of the project
FileRasterSource rasterSource;

try {

rasterSource = new FileRasterSource(rasterPath);

RasterLayer rasterLayer = new RasterLayer(rasterSource);

map.getLayers().add(rasterLayer);

} catch (IllegalArgumentException iex) {

// handle exception

} catch (FileNotFoundException fe) {

// handle exception

} catch (RuntimeException re) { // handle exception }

and also:

FileRasterSource rasterSource = new FileRasterSource("k5521.ecw");

rasterSource.project(map.getSpatialReference());

RasterLayer rasterLayer = new RasterLayer(rasterSource);

map.getLayers().add(rasterLayer);

what am I doing wrong?

Re: open ecw files offline as base map

RavindraSingh — Thu, 26 Feb 2015 11:37:49 GMT

you can add these line before adding to the JMap. and then see.

StretchRenderer stretchRenderer = new StretchRenderer();

StdDevStretchParameters stretchParams = new StretchParameters.StdDevStretchParameters();

stretchParams.setStdDev(2.5f);

stretchRenderer .setStretchParameters(stretchParams);

RasterLayer rasterLayer = new RasterLayer(rasterSource);

rasterLayer.setRenderer(stretchRenderer );

rasterLayer.setName(fileName); // Here file name is the your raster file name. e.g.= "k5521.ecw".

map.getLayers().add(rasterLayer);

It should work.

Re: open ecw files offline as base map

idozoar — Thu, 26 Feb 2015 13:30:06 GMT

what is the "rasterSource" you mentioned on the fifth line of the code?

Re: open ecw files offline as base map

RavindraSingh — Thu, 26 Feb 2015 14:15:03 GMT

Yes,

e.g.

FileRasterSource rasterSource = new FileRasterSource(rasterPath);

Re: open ecw files offline as base map

idozoar — Sun, 12 Dec 2021 00:07:36 GMT

it doesn't work, here is the whole code, what am I getting wrong?

what needs to be the value in "rasterPath"? again: "k5221.ecw"?

import java.awt.EventQueue;
import javax.swing.JFrame;
import java.awt.BorderLayout;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;
import java.io.FileNotFoundException;
import com.esri.runtime.ArcGISRuntime;
import com.esri.core.raster.FileRasterSource;
import com.esri.core.renderer.StretchParameters;
import com.esri.core.renderer.StretchParameters.StdDevStretchParameters;
import com.esri.core.renderer.StretchRenderer;
import com.esri.map.JMap;
import com.esri.map.MapOptions;
import com.esri.map.MapOptions.MapType;
import com.esri.map.RasterLayer;

public class newclass {


  private JFrame window;
  private JMap map;


  public newclass() throws Exception {
    window = new JFrame();
    window.setSize(800, 600);
    window.setLocationRelativeTo(null); // center on screen
    window.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    window.getContentPane().setLayout(new BorderLayout(0, 0));


    // dispose map just before application window is closed.
    window.addWindowListener(new WindowAdapter() {
      @Override
      public void windowClosing(WindowEvent windowEvent) {
        super.windowClosing(windowEvent);
        map.dispose();
      }
    });
   
    map = new JMap();
    FileRasterSource rasterSource = new FileRasterSource("k5521.ecw");
    StretchRenderer stretchRenderer = new StretchRenderer();
    StdDevStretchParameters stretchParams = new StretchParameters.StdDevStretchParameters();
    stretchParams.setStdDev(2.5f);
    stretchRenderer .setStretchParameters(stretchParams);
    RasterLayer rasterLayer = new RasterLayer(rasterSource);
    rasterLayer.setRenderer(stretchRenderer );
    rasterLayer.setName("k5521.ecw"); // Here file name is the your raster file name. e.g.= "k5521.ecw".
   
    map.getLayers().add(rasterLayer);
    window.getContentPane().add(map);


  }


  /**
   * Starting point of this application.
   * @param args
   */
  public static void main(String[] args) {
    EventQueue.invokeLater(new Runnable() {


      @Override
      public void run() {
        try {
          newclass application = new newclass();
          application.window.setVisible(true);
        } catch (Exception e) {
          e.printStackTrace();
        }
      }
    });
  }
}

Re: open ecw files offline as base map

SachinKanaujia — Fri, 27 Feb 2015 05:29:49 GMT

FileRasterSource should have the full path of the .ecw file. So if your ecw file in under C:\GIS\data\

then change this

FileRasterSource rasterSource = new FileRasterSource("k5521.ecw");

FileRasterSource rasterSource = new FileRasterSource("C:\GIS\data\k5521.ecw");

Re: open ecw files offline as base map

idozoar — Fri, 27 Feb 2015 05:58:28 GMT

its still doesn't work.
I don't think it has anything to do with the full file path because the file is inside the folder of the project.

Re: open ecw files offline as base map

SachinKanaujia — Fri, 27 Feb 2015 12:12:58 GMT

As a good practice whenever in doubt always use the full path. Can you print the exception message you are getting?

I don't have a sample ecw file to test but it may well be a BUG. This method already has several issues. I dont know if they have added support for ECW for this method. Please check with ESRI support !!!

Re: open ecw files offline as base map

idozoar — Fri, 27 Feb 2015 16:11:40 GMT

I can send you a .ecw file if you'll write your email...
as far as I understood it suppose to support .ecw.
more than that- the full software support it for certain.

the exception I keep getting:

Java version : 1.7.0_45 (Oracle Corporation) x86

Rendering engine : DirectX

java.lang.RuntimeException: java.lang.RuntimeException: Failed to open raster dataset: k5521.ecw. - Failed to open raster dataset: k5521.ecw.

at com.esri.core.raster.FileRasterSource.<init>(Unknown Source)

at NewMapUI.<init>(NewMapUI.java:42)

at NewMapUI$2.run(NewMapUI.java:66)

at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:251)

at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:733)

at java.awt.EventQueue.access$200(EventQueue.java:103)

at java.awt.EventQueue$3.run(EventQueue.java:694)

at java.awt.EventQueue$3.run(EventQueue.java:692)

at java.security.AccessController.doPrivileged(Native Method)

at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:76)

at java.awt.EventQueue.dispatchEvent(EventQueue.java:703)

at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:242)

at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:161)

at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:150)

at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:146)

at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:138)

at java.awt.EventDispatchThread.run(EventDispatchThread.java:91)

Caused by: java.lang.RuntimeException: Failed to open raster dataset: k5521.ecw. - Failed to open raster dataset: k5521.ecw.

at com.esri.core.raster.FileRasterSource.nativeCreate(Native Method)

at com.esri.core.raster.FileRasterSource.<init>(Unknown Source)

... 16 more

Re: open ecw files offline as base map

EricBader — Fri, 27 Feb 2015 20:39:47 GMT

This raster format is actually not supported in the Java API.

A definitive list of supported raster data types are found here: Add raster data—ArcGIS Runtime SDK for Android | ArcGIS for Developers

Re: open ecw files offline as base map

SachinKanaujia — Mon, 02 Mar 2015 05:57:30 GMT

ido zoar So it turns out the .ecw is not supported with Java API. You can instead use the approach to add local Raster files to a Local Map service created from a blank mpk. The only drawback there is that for Raster local server doesn't support Renderers.

Below is a small code snippet. You can make modifications as per your requirements

final String workspaceId = ""+count++; // an arbitrary unique string

	// create a local map service and enable dynamic layers
	LocalMapService localMapService = new LocalMapService("C:\\mpk_blank.mpk");

	if(!localMapService.getEnableDynamicLayers()) {
	localMapService.setEnableDynamicLayers(true);
	}

	if(localMapService.getStatus() == LocalServiceStatus.STARTED) {
	localMapService.stop();
	}

	// get dynamic workspaces from service
	WorkspaceInfoSet workspaceInfoSet = localMapService.getDynamicWorkspaces();

	// create a workspace info via the static method according to data type
	// e.g. shapefile folder connection
	WorkspaceInfo workspaceInfo = WorkspaceInfo.CreateShapefileFolderConnection(
	workspaceId, fileDir);
	// also:
	// --> WorkspaceInfo.CreateSDEConnection
	// --> WorkspaceInfo.CreateRasterFolderConnection
	// --> WorkspaceInfo.CreateFileGeoDatabaseConnection

	// set dynamic workspaces for our local map service
	workspaceInfoSet.add(workspaceInfo);
	localMapService.setDynamicWorkspaces(workspaceInfoSet);

	// now start service...
	localMapService.start();

	// set up a local dynamic layer
	final ArcGISDynamicMapServiceLayer localDynamicLayer = new ArcGISDynamicMapServiceLayer(localMapService.getUrlMapService());

	// add the layer to the map
	jMap.getLayers().add(localDynamicLayer);

	localDynamicLayer.addLayerInitializeCompleteListener(new LayerInitializeCompleteListener()
	{
	@Override
	public void layerInitializeComplete(LayerInitializeCompleteEvent arg0)
	{

	DynamicLayerInfoCollection layerInfos = localDynamicLayer.getDynamicLayerInfos();
	DynamicLayerInfo layerInfo = layerInfos.get(0);



	DrawingInfo drawingInfo = new DrawingInfo(simpleRenderer, TRANSPARENCY);
	layerInfo.setDrawingInfo(drawingInfo);

	// Create the data source
	TableDataSource dataSource = new TableDataSource();
	dataSource.setWorkspaceId(workspaceId);
	dataSource.setDataSourceName(fileName);

	// Set the data source
	LayerDataSource layerDataSource = new LayerDataSource();
	layerDataSource.setDataSource(dataSource);
	layerInfo.setLayerSource(layerDataSource);

localDynamicLayer.refresh();

}

});