In an increasingly digitalized world, open data and location intelligence (LI) play a crucial role in planning to develop more efficient business processes, open up new markets or optimize existing processes.
Geodata offers enormous potential due to its high precision and timeliness. However, Germany's federal structure, with its 16 federal states and the associated different regulations and solutions, poses a challenge when it comes to providing and using such data.
Note: Presentation on the topic of "Open Data" at the Esri Conference 2024.
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High-quality data sets for Europe
At European level, the EU Commission has published a list of so-called High Value Datasets. These datasets are to be made available by public authorities free of charge and under an open license in order to promote socio-economic benefits. The datasets are divided into six categories: Geospatial, Earth Observation and Environment, Meteorology, Statistics, Business and Business Ownership, and Mobility.
The harmonization of these data sets offers great potential for the European economy, as the provision in machine-readable formats via APIs and mass downloads enables further use.
However, Germany has a heterogeneous landscape when it comes to the provision of geodata. Each Federal state has its own approach to collecting, processing and providing geodata, which makes it difficult for companies and users to use this data effectively.
While some federal states use geodata such as house perimeters (georeferenced polygons of building footprints), are available as open data, house coordinates are not. house coordinates with address information are often not freely accessible or subject to a charge, as they are sometimes managed by Deutsche Post Direkt. Parcels of land Bavaria, for example, still only makes them available for a license fee. This fragmentation means that companies such as Nexiga are harmonizing the data and making it usable for location intelligence applications.
Use for location intelligence
Official geodata is of central importance for spatial issues and is generally of high quality, as it is collected and maintained by government agencies. These include the ZSHH (Zentralstelle für Hauskoordinaten und Hausumringe) and the BKG (Bundesamt für Kartographie und Geodäsie), which provide their data in accordance with the Fees Ordinance. In addition, geoportals and state surveying offices of the federal states offer geodata, the availability and costs of which vary depending on Federal state .
Nexiga sees it as its task to harmonize this official geodata and enhance it with additional information such as addresses, geocodes and other features. This enriched data offers significant added value for customers and companies that require precise location information for analyses and business decisions.
House coordinates, house perimeters and LoD2 building models
House coordinates contain important address information and are essential for many applications in location analysis. However, only a few federal states make this data available as open data. The building perimeters, on the other hand, which contain georeferenced outlines of buildings without address information, are provided as open data in all 16 federal states and updated annually. Nexiga integrates this data in order to obtain precise building information and make it usable for its customers.
Geodata products such as the LoD2 building modelswhich contain three-dimensional information about buildings, add a third dimension to the building perimeter by depicting not only the floor plans but also the roof shapes of the buildings. This data is also made available as open data by all federal states and offers numerous application possibilities, whether for urban planning analyses or real estate valuations and much more.
Map to the 3D building model LoD2
- The building volume of the buildings in Bonn is shown
Advantages of obtaining data via Nexiga
Geodata obtained via Nexiga is generally more up-to-date than alternative data sources, as it is regularly updated and maintained. All Germany-wide data is up to date. The standardization of geodata also offers advantages, as the fragmentation of data between the individual federal states is an obstacle. Each Federal state offers its data in different formats and on different platforms, which makes it difficult to use. Standardization facilitates integration into existing systems and guarantees interoperability between different applications. Formats can be adapted to specific customers and applications if necessary.
The data for the interactive map comes from the Nexiga database and our partner DBI - Gastechnologisches Institut gGmbH, a subsidiary of the DBI Group. Various factors are taken into account to determine the heat demand, including specific building data such as number of floors, building type, year of construction, renovation status and information from 3D building data (LOD2). Socio-demographic characteristics such as household size and regional climate data are also included in the calculations.
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More up-to-date than alternative data sources
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Standardisierung zur Integration in bestehende Systeme
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Customer-specific and application-oriented
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Enrichment as a service
