Basic Topographic Model
BASIC INFORMATION
The basic topographic model (BTM) represents a dataset (database) of spatial data, collected in vector form (point, line, polygon) in three dimensions and includes the following themes defined in accordance with the EU INSPIRE directive:
- Constructions;
- Transportation network;
- Hydrography;
- Land cover;
- Relief;
- Utilities.
Due to the general character of the themes that make up the content, the accuracy and level of detail of the data and the geographical scope that covers the territory of the Republic of Serbia, the BTM itself can be considered a national base of vector topographic data. Compared to data in raster form, vector topographic data have a number of advantages. Vector data provides greater possibilities for manipulation, allowing:
- determination of distance, lengths and surfaces;
- assigning a great number of attributed, depending on the purpose for which these data are being used;
- performing various analyses, transformation, generalization, statistics, search, spatial and attributive selection and numerous other relational queries;
- minimal memory capacities for storage.
The Republic Geodetic Authority has established a fully functional system for the formation of BTM, which includes appropriate equipment and a modern technological solution for the collection and control of spatial data and accompanying attributes, a database for storing and updating data, accompanying procedures and documentation.
About 17,000 km2 are covered with the BTM digital data, namely over the region of southeastern Serbia and the broader area of the city of Belgrade, and the development of the BTM for the area of the city of Novi Sad is underway.
Issuance of the BTM content is regulated by the Law on republic administrative fees.
