Vector data model of the Müller’s map of Bohemia

Cajthaml, J. (2010) Vector data model of the Müller’s map of Bohemia. Acta Geodaetica et Geophysica Hungarica, 45 (1). pp. 31-38. ISSN 1217-8977

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Abstract

The Müller’s map of Bohemia is one of the most important maps of Czech history. In the last couple of years this map has been scanned and analysed a few times. Spatial position of the map symbols is usually compared with current situation. Using this method we can explore changes of the landscape through the ages. The crucial problem of this approach is georeferencing raster image into some well defined coordinate system. The best way to handle that problem is using ground control points (GCPs) and appropriate type of spatial transformation. The problem of choosing the best set of GCPs is not solved correctly yet. Usually well identifiable points are used depending on the researcher’s meaning. Proposed method is based on creating full vector data model of the map. Having complete vector database of the map, we can test many combinations of GCPs and many types of spatial transformation. Another great advantage of vector database is the fact, that vector data are easier to be analysed (e.g. spatial overlays, proximity analyses, or spatial statistics) in GIS software. As we wanted to make a new thorough analysis of the Müller’s map of Bohemia, we decided to create its full vector data model. Methods of creating the model are explained in this article. At the end the map was georeferenced and several spatial statistics were done.

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