 Tasks in QGIS – Dissolving Layers Dissolving features based on a common variable, field, or attribute is a great way to combine and merge multiple features into one. In this video, we will dissolve the Mississauga Ward boundaries to create a single City of Mississauga boundary layer. With your spatial data added to your QGIS project, select the Processing tab in the top menu bar and click Toolbox. Type the word Dissolve in the search bar. Beneath Vector Geometry, double-click on the Dissolve tool. Select your layer as your input layer. The Dissolve tool also gives you the option to dissolve using fields. If you would like to dissolve your features using this method, select the Browse icon and checkmark the box next to the field you would like to use to dissolve your layer. If you would like features that do not touch to remain separate, select the drop-down arrow next to Advanced Parameters and checkmark the box next to Keep Disjoint Features Separate. You have the option to save this layer in your desired location by selecting the Browse icon or create a temporary layer by skipping the step. Click on Run. The Dissolve layer has now been added to your Layers pane. Click on Close. If you outputted a temporary layer and would like to save it, you can do so by clicking on the temporary Scratch Layer icon in the Layers pane. The Save Scratch Layer window will open. Change the format to Esri Shapefile and you can select the Browse icon next to File Name to save it. Give your new layer a file name and select Save. Select OK when done. For more information on QGIS, visit the UTM Library QGIS playlist.