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Free Map Services (Google, Yandex, OSM) for Creating historical GIS: Digital Map of the Trans-Siberian Railroad


 The article describes technological aspects of digital historical map creation taking as an example the 1891–1916 Trans-Siberian Railroad map. The author faced two tasks. On the one hand, he wanted to create a historical GIS map in shapefile format; on the other hand his goal was to tell us about software tools and data which proved to be most suitable for solving the first task. Present day map services can be of use at the initial stage of digital map creation in case most of objects coincide with current ones. It is important however to know where discrepancies begin. The author studies various open access map services both corporate (Google, Yandex, Bing) and those created by many users on a crowd sourcing basis (OpenStreetMap, Wikimapia). He pays particular attention to work with Google Earth application which he considers to suit better than specialized GIS applications for the initial formation of a set of objects on the map (in this case, railway lines). The author compares open map services in particular those providing access to aerial (satellite) images of the Earth and addresses different kinds of cartographic systems properties as useful tools for historical GIS creation (satellite images, panoramic photos, the Wiki mode user comments, etc.).
