In QGIS 3.22.2 I have used the ORS distribution calculation tool to work out the number of vehicles that go from one origin to multiple destinations. I am trying to represent this number as a line width of the sum of the number of persons expected to travel along the route.
I have used the graduated symbology with the set width but this only shows the largest line not the sum of the overlapping lines.
I there a way to do this?
sum("NumsPerson", group_by:=geom_to_wkt($geometry))(and also maybe brake lines before into linestrings) – Taras May 11 '22 at 08:53Dissolveyour route network. Then usesplit lines at pointswith your dissolve network and either manually set points, or the extracted vertices. Make sure every line segment has a unique ID.Join attributes by locationfrom your original data to your split lines, while allowing one-to-many joins. Finally run the following through the field calculator:sum("passenger numbers",group_by:="ID of the line segments"). This sums up the number of passengers along the current line segment. Different from the linked question this works with partly overlapping features. – Erik May 11 '22 at 08:54