Jan 29, 2016 · G. Dissolve. Dissolve layer is similar to union but in this everything is merged by the common field and it works on single layer. To do that open the tool from Vector > Geoprocessing Tools > Dissolve. You assign Input Vector layer that you want to work on and dissolve field that is common and finally assign the output file name.
In the Properties window, from the left panel, select Attribute forms. We are going to change the Widget Type for each of the Fields. fid is an auto-increment field and we can keep it hidden from users. So, highlight the fid field under Field section and then from the Widget Type select Hidden
Attribute [tablefield: any] Optional. <put parameter description here> Dissolve... [selection] <put parameter description here> Options: 0 —  polygons with same attribute value; 1 —  all polygons; 2 —  polygons with same attribute value (keep inner boundaries) 3 —  all polygons (keep inner boundaries) Default: 0
In QGIS, a style is a way of cartographic visualization that takes into account a layer’s individual and thematic features. It encompasses basic characteristics of symbology, such as the color and presence of fill, outline parameters, the use of markers, scale-dependent rendering, layer transparency, and interactions with other layers.
Easy enough to go to QGIS and select those features by type one after the other and use a bit of copy-paste. And maybe fiddling a bit with the attributes. But hey, after all we are a bit lazy and on the one hand like to have an ice cream later on that afternoon and on the other hand like to avoid errors.
Oct 16, 2015 · We may choose to draw these in QGIS or in AutoCAD. For this tutorial, we will learn how to export our vector layers in QGIS as DXF files, after downloading some readily-available data in QGIS. We will use the same data we downloaded from OpenStreetMap (OSM) in QGIS: Collecting Data in QGIS.
Learn how to select, save/export feature as a new layer using QGIS 3.2.1 by following expeditious tutorial. Are you newbie QGIS 3.2.1 user check QGIS 3.2.1 for beginners. Selection of Features in QGIS 3.2.1. Add a new vector layer and create a project. In the tutorial we used world continents shapefile. You can do selection by two ways.