![]() Note: Changing the Coordinate System of your Project or a Layer Use Zoom to best Scale to zoom to the maps actual size based on its resolution. Use Zoom to Layer Extent to zoom to the extents of that Map Layer. Two useful zoom options are available in this menu. ![]() If you right click on a layer in the Layers window a menu will be displayed. The map should now be displayed in your workspace.Īll maps you add are displayed as layers in the Layers window found on the left hand side of the QGIS workspace. Use the File Browser to locate the base map file you want to add. Option 1 - Add a georeferenced image file - Raster Layer:Ĭlick this link to view a list of georeferenced maps we have available for you to use.įrom the top menu bar, click Layer, then select Add Raster Layer It is possible to add images or datasets, and these can be either locally or remotely stored. In QGIS we have the option of adding base mapping that is held in different file formats. To begin, you need to add a base map layer that you will use to georeference your map.Ī base map layer is basically an already georeferenced map.Some useful free software for editing and cropping images includes ImageMagick, Irfanview and GIMP. remove the margin areas outside the map boundaries. Open your map in your Image Editing software.Ĭrop the non-geographic parts of the map ie.Open QGIS and from the menubar select Plugins > Manage Plugins, and select the GDAL Georeferencer plugin.Once installed, you will also need to enable the Georeferencer plugin. QGIS can be downloaded from the official Quantum GIS website. This means it is always improving but can therefore be necessary to keep learning how to use it. Weaknesses: Software is in development and can be regularly updated.It offers a good range of coordinate systems, transformation methods, and image formats. Strengths: It is free, open-source software, and intuitive to use.Output options: A georeferenced image file - GeoTIFF.QGIS on most platforms does not open JPEG2000 images, so you will need to convert these to TIFF. This process follows the basic principles of georeferencing.
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