RTGE - Spot Topographic Elements Surveyed by Surveyors - MEL

Dataset containing the punctual objects of the RTGE, the altitude of the point and entered in a field: COORD_Z. Topographic objects present on the territory of the MEL and surveyed by surveyors The data collected concern the themes of sanitation, electricity, gas, public lighting, signalling, telecommunications, teledistribution, urban transport, street furniture, heating, topography. The object surveys are defined by one point (point object), two points (circular object), or three points (rectangular object). Regarding the survey of linears, it can be represented by a single line for simple lines, or by two lines for complex linears (with the notions of size, thickness and width). All topographical elements are listed in the topographic charter. **Collection context:** Topographic data is collected and integrated on a daily basis by the geographic data service, and more specifically by the UF Topography. The specific data concern the themes of sanitation, electricity, gas, public lighting, signalling, telecommunications, cable television, urban transport, street furniture, heating, topography. It is used in particular by road and sanitation services for development projects. It is one of the constituent elements of the PCRS (Simplified Street Body Plan). **Collection method:** Data entered by the European Metropolis of Lille (MEL). The data is updated following the observation of a construction, the modification of the road or a lack of survey. This request can come from the photo-interpreter team (following an observation in the field or via the orthophotoplan), from an internal or external service at the MEL. **Method of survey:** The object surveys are defined by one point (point object), two points (circular object), or three points (rectangular object). Thresholds and adjoining are entered as a point object and attached to a linear. Transformers and gas expansion stations are raised in 3 points if they are rectangular, otherwise they will be entered in linear. All topographical elements are listed in the topographic charter (link in the resources section). The technology used is geo-referencing by GNSS system. Geo-coding is carried out on a tablet using Land2Map software. **Integration method:** Integrated in base via FME