Reference Bâti – CA Saint-Quentin-en-Yvelines

General information of the entity class * Origin or Source: SQY * Construction date: * News: 2019 *Accuracy: 5000th * Reference system: RGF93 – CC49 (3949) * Contact: [e-mail] * Geographical completeness: territory of the agglomeration Description of the database The Bâtiment 2.5D database is the initial reference of the built reference frame of the agglomeration. It comes out and updated at the same time as the aerial shots in order to model the two reference frames. It is a detailed topographical database for each of the elements built according to their ground footprint.实体类通用信息 * 来源：SQY * 构建日期： * 发布动态：2019年 * 精度：5000th * 参考坐标系：RGF93 – CC49 (3949) * 联系方式：[e-mail] * 地理覆盖范围：集聚区全境 数据库描述 2.5维建筑（Bâtiment 2.5D）数据库是该集聚区建筑参考框架的初始基准数据集，与航空影像同步发布并更新，以完成两类参考框架的建模工作。该数据库为所有按地面基底轮廓建模的建（构）筑物要素提供了详尽的地形数据。