Land occupancy 2013 Tarn

The BD OCS GE is a vector database for the description of the land use of the entire metropolitan territory and overseas departments. It is a national repository, constituting a base, usable at national and local level. It contributes to the calculation of indicators requested by urban planning documents (PLU, SCoT). It is also compatible (as long as possible) with existing land cover layers. It is based on an open model separating soil cover and soil use (called 2-dimensional model) with precision based on large-scale referential (RGE®) and temporal coherence (a vintage concept) allowing updates to follow changes in space consumption. The BD OCS GE is constituted by administrative zones (set of municipalities, department or region) while ensuring geographical and thematic continuity at national level. Eventually, it will represent a continuous partition of the territory. Its production is based on existing data extracted from IGN’s internal databases as well as any other data that can be mobilised from national or local repositories (graphic parcel register, regional OCS, etc.). The BD OCS GE is based on the national nomenclature recommended by the National Geographic Information Council (CNIG), developed by the Centre for Studies and Expertise on Risks, Environment, Mobility and Planning (CEREMA), under the guidance of the Ministry of Ecology, Sustainable Development and Energy (MEDDE.DGALN). The GE OCS BD respects the national production recommendations that accompany the national nomenclature. It is based on an intermediate data layer, the national repository of the main networks constituting the “National Ossature”. It has four main functions: * ensuring geographical continuity between territories; * ensure reference geometry; * partition the territories in a homogeneous manner; * ensure spatial cohesion between scales of the territory. OPenIG makes available in shapefile format the OCS GE BD for the Tarn as well as the associated documentation. \--![European ERDF SDF banner] (https://www.openig.org/sites/default/files/logos_banniere/FDS_EUROPEEN_FEDER.JPG) \—