Learn QGIS - Fourth Edition

Adding an overview map

Maps that show an area up close are often accompanied by a second map that tells the reader where the area is located, helping to provide context to your map. To create such an overview map, we need to add a second map item, then make it an overview map by clicking on the + button in the Overviews section. By setting the Map frame, we can define the map extent and how it should be highlighted. The following screenshot shows an example of this using an overview map. In the main map, the area is highlighted in red. This relates to the corresponding area in the overview window. I have checked the center on canvas button on the toolbar on the left of the following screenshot. You may need to return to the QGIS project window ...