Get Online Maps
Online maps are raster datasets that can contain imagery, elevation, or land use information. Online maps are imported as dynamic imagery—they will update when panning and zooming in or out of the Graphics Window. This requires that the XMS software have an active internet connection.
Once the online maps command is activated, the Virtual Earth Map Locator dialog will appear, but only if no other dynamic images are in the project. In this dialog, the map location can be specified. See the section Virtual Earth Map Locator for more information on this dialog.
If a projection has not been set, or if the current projection is different than the selected map location, a warning dialog will appear asking for the projection to be set. The Display Projection dialog will then open. The projection of the map location will be entered as the default if available.
With the map location and projection set, the Get Online Maps dialog will appear. The Get Online Maps dialog allows selecting online data from a variety of different sources. Once online maps has been selected, the data resolution will be automatically adjusted based on the zoom parameters. Online maps can only be viewed in plan view.
Note that online data sources are on external servers that the XMS software has no control over. The data may draw/export very slowly or become unavailable at any time. The XMS software has no control over this.
More information about the various types of online data can be found by visiting the following links:
- World Imagery More Info
- World Street Maps More Info
- World Topo Maps More Info
- USA Topo Maps More Info
When online maps is available, right-click on each of the map items in the Project Explorer and select Export to convert them to static images that can be saved to the local hard drive. It is possible to convert or interpolate online maps containing elevation data to various elevation formats.
Exporting to a File
An online map can be exported to a file and loaded into the project. Do this if wanting to save a local copy and not be dependent on internet access. Two options exist for exporting:
- Export – This will export the online map as a raster file in TIF format. In doing this, the data will be resampled. See Resample Raster for more information.
- Export World File – Saves the world file data for the location. This will not include the image itself, only the projection information for a TIF file. A TIF file should be saved using the Export command.
With a static raster file there may be more commands and options available with a local file, such as interpolation or conversion to other object types, than with online maps.
|Please Note: Using the Advanced option requires very specific and detailed knowledge about the source data. If you need assistance with what to place in each field, you will need to contact the source data provider. Aquaveo is unable to provide any technical support beyond the documentation in this section.|
Clicking the Advanced button in the Get Online Maps dialog will bring up the Select Online Source dialog. Here a list of available sources is shown. Sources can be added or edited through this dialog.
- Duplicate Source – Creates a copy of the selected source in the list above.
- Remove Source – Deletes the selected source from the list above. Built-in sources cannot be removed.
- Add Sources from File – Brings up a browser where an online source file (*.csv) can be selected to add a source to the available source list.
- Add New Source – Brings up the Add New Source dialog.
- Edit Source – Brings up the Add New Source dialog which allows editing an existing source. Built-in sources cannot be edited.
The Add New Source dialog is used when adding a new source and when editing an existing source. The dialog has the following options:
- Service Name – Allows entering or changing the name for the source.
- Category – Select the data source web service catagory. Can be Web Map Services (WMS), Web Feature Services (WFS), or Transverse Technologies (TTS).
- URL – Specifies the URL of the new source.
- Layers to download – For sources containing layers, which layers to download can be specified here.
- Is SSL Safe? – Check this if the data source server is SSL safe.
- Minimum cell size – Sets a minimum cell size for data downloaded from the source. Data with cell sizes below this value will not be downloaded.
- Maximum cell size – Sets a maximum cell size for data downloaded from the source. Data with cell sizes above this value will not be downloaded.
- File abbreviation – Determines the file abbreviation that will be affixed to the file name to indicate the file was downloaded from the source.
- Image format – Determines the file format used for files downloaded from this source. The TIFF and PNG formats are available.
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