i have the following problem: I have a set of buildings (either as a polygon, or if needed as centroid points) which I want to "sum up" in larger polygons. My buildings are classified in 8 different classes (as attribute), which should be used for calculating the larger polygons. Basically I would like to have a set of polygons, divided in 8 classes, which cover the whole urban area. So far, I havent found a solution which fits my case. Does anyone of you have an idea, how to do this?
Thanks in advance, greetings.
Richard, thanks for your idea. The dissolve tool works in the way you described it, however this is not the result I was aiming for. I actually want the buildings to spread out and create a new polygon topology, so that the spare room between the buildings are also covered by the polygon. Those polygons should be created according to the 8 classes, but I would prefer several polygons for each class (because the urban area im trying to cover is actually pretty large) and not just one multipart-feature for each class.
Do u have a solution for this case in mind? Im sorry, that my first post was a bit sloppy in regards to my purpose.
Thanks for the help. The Aggregate Polygon tool seems to work for my use-case-scenario, when I split up my building shapefile into the number of classes I have (i would probably have to clip the results later on, since there might be some slight overlaps of the polygons in the end).
However, the Delineate Built-up Area Tool seems to be the better fit. Is there a way to include an attribute class field in the calculation? The Identifier-Field has a different task than what I am looking for. Im also experiencing some trouble with the Minimum Detail Size Field. Ive tried several different sizes there, but I always receive the "error 000200 : Error in building map context. Reference scale is not defined." which is wrong, because all my shapefiles are referenced as well as the data frame. Any idea?
Great video-tutorial by the way 🙂