You need a random city map for testing a new analysis? Or you want to demonstrate something at a QGIS User-Conference and don't want to use public data? Or just want a city map for a computer game?

We can use the graphical modeler to create a unique random city shape with districts, parcels, houses and associated data like number of floors or inhabitants. This talk will show and explain the single steps of an exemplary model for this use case.

Considering the tendency of growing cities and increasing urbanization of the suburban areas, it becomes crucial to monitor the processes of densification to enable regulatory intervention when necessary. The municipality of Fredersdorf-Vogelsdorf aims to prevent uncontrolled densification as described by leveraging QGIS.
In order to control these processes it is essential to first determine the areas where such a intervention is necessarry and in which areas is potential for further densification. This can be achieved by surveying not only the number of inhabitants and houses but also reviewing the development of property sizes and the sealing of area.