How can graphical elements be identified on cadastral map ?
Usually the identification of the main graphical elements on the map does not represent a huge problem. Some specificities however, such as the representation of different kinds of agricultural lands, or more often the parcel boundaries can also be a source of confusion (see Figs. 1.1-1.3). In some cases for instance, the parcel boundary can include, exclude or split a wall between 2 owners. This is found in many renovated cadasters from the end of the 19th century. City walls, low walls, regular walls, and fences may also not be well identified or distinguished, as the graphical features (thick line, double line, dashed line, dotted line, colored line, etc.) representing them are often quite specific. As a result, they can easily be confused with other graphic elements, such as district or municipality boundaries, which may be represented with a similar thickness.
Figure 1.1 Typical difficulties presented by the Napoleonic-type cadastre of Lausanne by Berney, 1827-31
Figure 1.2 Typical difficulties presented by the renovated-type cadastre of Neuchatel, 1872
Figure 1.3 Typical difficulties presented by the Ancien Regime cadastre of Lausanne by Melotte, 1721-1727