Regional Technical Map scale 1:10,000 raster — graphic result of the Geotopographic Data Base Auction of the Tiber River and Lake Trasimeno — Umbria

CTR coming from a new relief related to the Tiber river auction and Lake Trasimeno. The CTR also derives from the objects contained in the multi-resolution DBT, of which it is the exact cartographic representation.CTR（制图表达，Cartographic Representation）源自与台伯河拍卖及特拉西梅诺湖相关的新型地形起伏数据集。该CTR同时源自多分辨率DBT（multi-resolution DBT）中的地物要素，且为多分辨率DBT的精确制图表达。