Load a Background Map
Load the selected background map into the current model-space view.
Overview
Loading a Background Map creates a WMTS/background map session for the active drawing. SPCAD requests the map image for the current view, inserts it as a raster image, stores the map bounds, and records the selected options.
Load a Map from the Palette
- Assign a CRS to the drawing if it is not already assigned.
- Switch to model space.
- Zoom to the area where the background map should be loaded.
- Open SPCAD Palette > Web Maps > Background Maps.
- Select a background map item from the list.
- Set Auto refresh on pan / zoom and Bring Background Image to Front as needed.
- Click the Map On / Off button.
SPCAD requests the map, inserts the raster image, and writes a message to the command line with the zoom level and tile count.
Load by Double-Clicking
You can also load a map by double-clicking a background map item in the list. This uses the same loading workflow as the Map On / Off button.
When an Existing Map Is Already Active
If another background map session is already active, SPCAD removes the existing session and replaces the map image with the newly selected map. The old temporary image file is queued for deletion.
Checks Performed Before Loading
| Check | What Happens |
|---|---|
| License check | If no valid license is found, SPCAD stops the operation. |
| Model space check | If the command is run in paper space, SPCAD asks you to run it in Model Space. |
| CRS check | If no drawing CRS is assigned, SPCAD asks you to assign a coordinate system. |
| Selected map check | If no map is selected, SPCAD asks you to select one before turning the map on. |
| View bounds check | If the current view bounds are invalid or too large, SPCAD stops the request. |