REFERENTIAL: Scan 25-IGN_department du Bas-Rhin (67)

The Scan 25 version 2 product is a collection of digital colour mapping images, obtained by rasterising (scanning or direct transformation of vector data) data used for the production of maps of the series at 1/25000 (Top25 et al.). It consists of a masaic “dalles”, digital images in TIFF format, 10 km on the side, georeferenced, without overload, no direct indication of georeferencing. Note that not all of these slabs have the same update date (from 2003 to 2009 for the most recent). The SCAN 25 is acquired from the IGN in the form of an extended licence which allows it to be made available to all public structures on the department (the general conditions of the IGN must, however, be respected for such dissemination).Scan 25 版本2数据集是一套数字彩色测绘影像集合，其通过对1:25000比例尺系列地图（如Top25等）生产所用的矢量数据进行栅格化（扫描或矢量数据直接转换）处理得到。该数据集由若干瓦片（dalles）组成的镶嵌影像构成，影像格式为TIFF，单幅边长为10千米，具备地理参考（georeferenced）属性且无过曝情况，但未附带直接的地理参考标注信息。请注意，并非所有瓦片的更新日期均一致，最新批次的更新时间为2003年至2009年。本Scan 25数据集通过法国国家地理研究院（IGN）的扩展授权协议获取，该协议允许向法国国内各省级公共机构提供该数据集，但此类分发需遵守IGN的通用使用条款。