<< Click to display Table of content >> Navigation:  The Model > To start > Add a backdrop

Adding a backdrop is useful to locate in the world.

Several backdrops are available in MithraSIG. They are accessible from the Backdrops section of the Model tab of the MithraSIG ribbon.

There are three backdrops:

•OpenStreetMap Tiles : These are tiles distributed by the WMTS OpenStreetMap server.

•Geoportail Backdrop : This is a backdrop hosted on the WMTS server of the IGN geoportal.

•Geoportail Aerial view : This is an aerial view hosted on the WMTS server of the IGN geoportal.

To add a backdrop, click on the corresponding button.

The backdrop layers are stored in the Backdrops group of the project layers list:

 

As this is data from the internet and updated in real time, access to this data depends on the state of the machine's internet connection.

A backdrop works in the form of a "tile", this means that each time you move in the graphics window, the canvas will update. This may cause latency depending on the quality of your connection. If its use is not desired, it is advisable to make it invisible.

It can happen that a backdrop hides other layers. To avoid this, you should change the order of the layers to ensure that it is the last one in the list.

For more information, see the chapter Ordre des calques.