Spatial Manager Desktop™ - FAQs: Background Maps

Introduction

• Objective of this section
  • To learn how to show image Maps in the Background of the Maps, which can enhance their quality as well as make them more understandable

• Topics in this section
  • Select 'Background Maps' models
  • Reference for 'Background Maps'
  • Configure User 'Background Maps'

How can I display a 'Background Map' in the Map?

You can select an image map model to show as 'Background Map' in the Map through the "Start" ribbon of Spatial Manager Desktop. This will open the "Background Map" window allowing you to select a model from the Maps list. You can find the list arranged using different Groups (Tabs) for the different preset Providers (OpenStreetMap, Mapbox, etc.) and the User groups (see how to Configure User 'Background Maps'). The image of the 'Background Map' is automatically adapted to the current Map view and it will be automatically fitted when the Map view changes (zoom, pan, etc.)

To change the image model map for the 'Background Map', you can run again this function. The "Background Map" window will display emphasized the current image map model, which you can keep by clicking in the "OK" button. Click in another model if you want to change to this model

The option "Zoom to the map" changes automatically the Map view to the 'Background Map' extent, defined in the server

Is there any special condition to use the 'Background Maps'?

Certain image maps providers included in Spatial Manager Desktop™ may require special terms of use for the users of their maps. You can configure any special setting needed to load the maps of such providers through the 'Background Maps' selection window ("Configure User Maps"). You can also configure and save settings the first time you try to use a 'Background Map' that needs a special configuration

Configure 'Background Maps' through the selection window

Note: some components in the above window (providers, names, windows look, etc.) may be slightly different to those that will appear on your computer

You can change the settings as often as desired. You can even insert blank values to reset the values of these settings

Sometimes, the image maps provider lets you access to some free maps but you need to get a key or code to use the others. In this case you will see "blocked" the maps which need that you modify the configuration according to the instructions above

Important note: Please, read also the specific license conditions in the paragraph relating to the 'Background Maps' of the application End User License Agreement (EULA)

Can I configure my own Web Map Services?

Yes, you can. Spatial Manager™ for AutoCAD includes the option to define "User Background Maps" in order to enable the access to more Mapping Services (TMS , WMTS or WMS)

Enter the parameters needed to define a new "User Background Map" through the option "Configure Background Maps" in the application Options ('SPMOPTIONS'), or through the "Configure User Maps" button in the Background Maps selection window ('SPMSPMBGMAPSHOW'). As you will see, you can also Edit or Delete any existing "User Background Map" through the same option

"Configure Background Maps" in the application Options

• TMS Type Maps (OSGeo Standard, only Pseudo-Mercator WGS84 and 256x256 tiles)
  • The Name of the Map
  • The Group (Tab) where you want to place the Map. If it comes to a new Group, it will be automatically created
  • The Type of the Map (TMS in this case)
  • The URL to access a specific valid Map in a valid Map Server. The URL must include the dynamic parameters specified in the application window
    • Authentication: To enter the login data to access the service, if needed

Configuring "TMS User Background Maps"

• WMS or WMTS Type Maps (OGC Standard, any Coordinate System and tile size)
  • The Name of the Map
    • The application will you propose a name for the Map based on the selected Layer(s) in the server (see below), but you can modify it if you want to
  • The Group (Tab) where you want to place the Map. If it comes to a new Group, it will be automatically created
  • The Type of the Map (WMS/WMTS in this case)
  • The URL to access a valid Map Server
    • Authentication: To enter the login data to access the service, if needed
    • The Layer(s) that you want to include in the 'Background Map'. Click in the "Get List of Layers" button and select the Layer(s) from the tree showing the complete Layers structure available in the Map Server
      • The Coordinate System (CRS) for the selected Layer(s). Choose an available CRS from the "Coordinate System" dropdown
      • The Image Format for the selected Layer(s). Choose an available Format from the "Image Format" dropdown
      • The Download method from the server: "Single image (recommended)" or "Image tiles grid" (WMS only)

Configuring "WMTS or WMS User Background Maps"

When configuring a User Map, clicking in the "Show Preview" button will display an image of the Map extension in order to help you verifying if all settings are correct. The "Preview" image will be automatically updated when you modify any configuration parameter

Notes about the WMS/WMTS 'Background Maps' performance:

• Whenever possible select the Coordinate System (CRS) assigned to the drawing in the 'Background Map' configuration
  • No CRS Transformation implies avoiding the deformation of the Map images while maintaining their original visual quality
• When configuring the "Download method" for a WMS 'Background Map', choose the default option "Single image (recommended)" whenever possible
  • The image quality is optimum
  • This choice will assure that not be shown texts or other elements repeated multiple times when they appear in more than one image tile
  • The alternative "Image tiles grid" should be used only when the "Single image" option becomes too slow
• Select any compressed image format (png, jpg, etc.) if available
  • The images will be smaller resulting in shorter download times
• See also "How can I improve the performance of the 'Background Maps' in AutoCAD?"

Related links

• Base maps as Map backgrounds

• Go to FAQS