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ENVI

Open Remote Datasets

Open Remote Datasets

You can access data from the following types of remote services:

To connect to remote datasets, you can:

  • Use the Remote Connection Manager to create and manage remote database connections, browse geodatabases and datasets on servers, view dataset properties, and add frequently used connections to a Favorites list.
  • Use Open Remote Dataset to connect directly to a remote dataset without browsing. Use this option when you are already familiar with the connection details of the dataset you want to open.

Remote Connection Manager


Use the Remote Connection Manager to create and manage remote dataset connections, browse datasets on geodatabases and servers, view dataset properties, and add frequently used connections to a Favorites list. For detailed information on the different services you can connect to and their features and properties, see Remote Data Sources Background.

Select File > Remote Connection Manager from the ENVI menu bar to open the Remote Connection Manager dialog. You can also access this dialog by clicking Remote Connection Manager in a file selection dialog.

If you previously connected to a server or geodatabase and added it to your Favorites list, you can connect to it by selecting Favorites > dataset_name from the Remote Connection Manager dialog menu bar. Otherwise, to create a new connection to a server or database, use the steps in the sections that follow.

Connect to a File or Personal Geodatabase

Run ENVI in 32-bit mode from the Windows Start menu before performing these steps.

To create a new connection to a file or personal geodatabase:

  1. From the Remote Connection Manager dialog menu bar, select one of the following:

    • Connection > Add File Geodatabase. The Add File Geodatabase dialog appears.
    • Connection > Add Personal Geodatabase. The Add Personal Geodatabase dialog appears.
  2. Enter a Catalog Path, or click the Browse button to browse to look for a geodatabase. An example of the catalog path format is provided in the dialog.
  3. Click OK. The list of available folders and datasets appear in the left panel of the Remote Connection Manager dialog.
  4. Navigate to a dataset and select it. The properties for the selected dataset appear in the right panel of the dialog. You cannot edit the properties for a file or personal geodatabase. See Geodatabases for additional details.
  5. Click Open Dataset to open the dataset in ENVI. Depending on your display preferences, the dataset may automatically display in the Image window and appear in the Layer Manager. If it does not automatically display, you can drag-and-drop remote dataset layers from the Layer Manager to the Image window or to multiple views.
  6. Click on the Refresh button to view any content changes made to the geodatabase while you are working in ENVI.

Connect to an Enterprise Geodatabase

Run ENVI in 32-bit mode from the Windows Start menu before performing these steps.

To create a new connection to an enterprise geodatabase:

  1. From the Remote Connection Manager dialog menu bar, select Connection > Add Enterprise Geodatabase. The Add Enterprise Geodatabase dialog appears.
  2. Do one of the following:

    • Select a database you have previously connected to in the ArcCatalog list.
    • Enter a Catalog Path, or click the Browse button to browse to look for a geodatabase. An example of the catalog path format is provided in the dialog.
    • Click Add Database Connection to use the ArcGIS Database Connection dialog to create a new connection. For details on this dialog, see the ArcGIS Help.
  3. If the server or geodatabase requires authentication to log in to it, enter the Username and Password. Otherwise, leave those fields blank.
  4. Click OK. The list of available folders and datasets appear in the left panel of the Remote Connection Manager dialog.
  5. Navigate to a dataset and select it. The properties for the selected dataset appear in the right panel of the dialog. You cannot edit the properties for an enterprise geodatabase. See Geodatabases for additional details.
  6. Click Open Dataset to open the dataset in ENVI. Depending on your display preferences, the dataset may automatically display in the Image window and appear in the Layer Manager. If it does not automatically display, you can drag-and-drop remote dataset layers from the Layer Manager to the Image window or to multiple views.
  7. If a dataset contains a legend, the legend appears in the Layer Manager. For example:

    You can overlay the legend as an annotation object on the image by right-clicking on the layer name and selecting Load Legend. This is useful, for example, in creating a Powerpoint presentation from the view.

  8. Click on the Refresh button to view any content changes made to the geodatabase while you are working in ENVI.

Connect to a Jagwire, ArcGIS Image Services, OGC, or IAS Server

To create a new connection to an ArcGIS Image Services, OGC, IAS, or Jagwire server:

  1. From the Remote Connection Manager dialog menu bar, select one of the following:

    • Connection > Add Jagwire Server. The Add Jagwire Server dialog appears.
    • Connection > Add ArcGIS Image Services Server. The Add ArcGIS Image Services Server dialog appears.
    • Connection > Add OGC WMS Server. The Add OGC WMS Server dialog appears.
    • Connection > Add OGC WCS Server. The Add OGC WCS Server dialog appears.
    • Connection > Add IAS Server. The Add IAS Server dialog appears.
  2. Enter a URL. An example of the URL format is provided in the dialog.
  3. If the ArcGIS, OGC, IAS, or Jagwire server requires authentication for login, enter the Username and Password. Otherwise, leave those fields blank.

    ArcGIS Image Services servers accept tokens (?token=characters) in the URL for authentication. This includes Image Services that require an ArcGIS portal account or ArcGIS online account. Image Service catalog items are also supported.

  4. Click OK. The server tree is added to the connection list.
  5. Select the server from the left panel of the Remote Connection Manager dialog. The list of available folders and datasets appear in the center panel.
  6. Navigate to a dataset to select it. The properties for the selected dataset appear in the right panel of the dialog. You can edit properties as needed before opening the dataset, as described in Jagwire, OGC WCS, OGC WMS, IAS , and ArcGIS Image Services. The following are some special cases:

    • You can view all available services of an ArcGIS Image Services server, but you can only open Esri® Image Services.
    • For OGC datasets only: if ENVI does not support one of the formats under the Supported Formats drop-down list (in the properties list in the dialog's right panel), you cannot open the dataset. You can view all of the dataset properties, but the Open Dataset button is disabled.
    • Some IAS datasets cannot be opened. When you select one of these, the properties do not display in the Properties List, and the Open Dataset button is disabled.
  7. To combine multiple datasets on a WMS server and open them as one map layer, select additional datasets from the dataset list. You can select multiple datasets by pressing the Ctrl or Shift key as you select files.
  8. Jagwire datasets can be queried by collection date/time, geographic extent, or both.
    • Click on the Query tab.
    • Specify the range of collection dates using the drop-down lists or time slider controls for After and Before. It is not required to specify both date parameters.
    • You can further refine your query by specifying optional After and Before time values.
    • Specify the geographic location of datasets you wish to view by selecting Extent. Extent values can be manually entered, or selected from a raster dataset, from the extent of the current view, or from a bounding box drawn in the view. In all cases, the extent coordinates must be Latitude/Longitude decimal degrees.
    • Click Run Query to execute the search based on the parameters provided. Datasets meeting the provided criteria are listed in the right panel.
  9. Click Open Dataset to open the dataset in ENVI.
  10. Depending on your display preferences, the dataset may automatically display in the Image window and appear in the Layer Manager. If it does not automatically display, you can drag-and-drop remote dataset layers from the Layer Manager to the Image window or to multiple views.
  11. If an OGC WMS or IAS dataset contains a legend, the legend appears in the Layer Manager. For example:

    You can overlay the legend as an annotation object on the image by right-clicking on the layer name and selecting Load Legend. This is useful, for example, in creating a Powerpoint presentation from the view.

  12. If you opened an IAS dataset that contains NITF metadata, you can view the metadata. To stream and view NITF imagery and metadata from IAS servers, you must have a NITF/NSIF Module license.
  13. When you open an Esri® simple/standalone feature class in a geodatabase, an icon appears next to the filename to indicate the type. Select the feature class name(s) and click Load Data. ENVI loads the feature class and displays it in the current view of the Image window.
  14. Click on the Refresh button to view any content changes made to the server while you are working in ENVI.

Open Remote Dataset


To open a remote dataset, use the following steps:

  1. Select File > Open Remote Dataset from the ENVI menu bar. The Open Remote Dataset dialog appears.
  2. There are two ways to open a dataset from this dialog:
    • To open a new dataset, type (or paste) the connection string for the dataset in the URL field. See Jagwire, Geodatabase, ArcGIS Server, JPIP and IAS, and OGC for guidelines on connecting to each dataset type.
    • If you have previously opened datasets, click the arrow and select the dataset from the drop-down list.
  3. If the server or geodatabase requires authentication to log in to it, enter the Username and Password. Otherwise, leave those fields blank.
  4. Click OK.
  5. Depending on your display preferences, the dataset may automatically display in the Image window and appear in the Layer Manager. If it does not automatically display, you can drag-and-drop remote dataset layers from the Layer Manager to the Image window or to multiple views.
  6. If you opened an IAS dataset that contains metadata, you can view that metadata by right-clicking on the image in the Data Manager and selecting View Metadata. The Metadata Viewer appears. If the NITF preference Automatically View Metadata in ENVI is set to True, the metadata are automatically displayed. To stream and view NITF imagery and metadata from IAS servers, you must have a NITF/NSIF Module license.

Jagwire

Enter a connection string that consists of the Representational State Transfer (REST) URL path, IP address or server (host) name, port number, the asset name, and dataset name. Preface the URL with https://. For example:

https://myserver/geoserver/ows?service=WCS&coverage=dataset_name

Geodatabase

Enter a connection string according to the type of geodatabase. For example:

  • File: C:\Data\FileGeodatabase.gdb\Dataset or \\Network\FileGeodatabase.gdb\Dataset
  • Personal: C:\Data\PersonalGeodatabase.mdb\Dataset or \\Network\PersonalGeodatabase.mdb\Dataset
  • Enterprise: gdb://SDEServer:80/Dataset or gdb://SDEServer:80:Database:Owner.version/Dataset

ArcGIS Image Services

You can use the Open Remote Dataset dialog to connect to a published Esri Image Service. Enter a URL that follows a Simple Object Access Protocol (SOAP) or Representational State Transfer (REST) convention.

The following example shows a URI for accessing a raster catalog. These raster types always stream in TIFF format so that you are getting actual source data.

http://exampleserver:1234/arcgis/rest/services/folder_name/dataset_name/ImageServer/catalog_ID

See the ArcGIS Resource Center for more information on Image Services.

JPIP and IAS

Enter a connection string that consists of the IP address or server (host) name, port number, the path (relative to the server root), and filename. Preface the URL with http:// or jpip://. For example:

jpip://ias-server:80/data/jpeg2000_file.jp2

OGC

Enter a connection string that consists of the server name, port number, CGI get request (followed by a question mark), and optional OGC keywords. Preface the URL with http://. For example:

http://ogc-server.org/cgi-bin/mapserv_dem?SERVICE=WMS&coverage=strmplus_raw&width=1000&height=1000&bbox=-105,39,-104,40

Because no port number was specified in the example above, ENVI uses port 80 as the default.

You can also define a proxy server by setting the OGC Proxy Server preference.

Add and Manage Favorites


You can add commonly used connections to a list of favorites, so that you can easily open those connections in the future. For connections that require a password, the Favorites option will be disabled.

  1. In the Remote Connection Manager dialog, click on the Add to Favorites icon. The Add to Favorites dialog appears.
  2. Enter a custom Name for the connection to help you recognize it in the Favorites List.
  3. If one or more folders exist in the Favorites List, select the folder into which to add the new favorite.
  4. Click OK. The name is added to the Favorites List in the Remote Connection Manager dialog Favorites menu.

You can manage your Favorites List by creating folders in which to group favorites, by reordering favorites, and by deleting or renaming favorites. To manage favorites, select Favorites > Manage to open the Favorites Manager dialog.

  • To create a new folder, right-click and select New Folder. The Enter Name dialog appears. Type a Name for the new folder and click OK. The new folder appears in the Favorites List.
  • To reorder the Favorites List, or to move favorites to a folder, select the name from the Favorites List, then drag and drop the name to a new location.
  • To rename a favorite or folder, right-click on the name in the Favorites List and select Rename. The Enter Name dialog appears. Type a new Name and click OK. The new name appears in the Favorites List.
  • To delete a favorite or folder, right-click on the name and select Delete. The name is removed from the Favorites List. Deleting a folder deletes all of the connections and subfolders associated with it.

When you are finished working with the Favorites Manager dialog, click OK to close the dialog. To access a favorite connection, click Favorites and select the connection name.



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