SELECTED POSSIBILITIES OF DATA EXCERPTION FROM THE DATABASE OF HISTORICAL ATLASES

A large database of more than 400 existing historical atlases released after 1950 was createdas a result of an extensive analytic research within the preparation of cartographic works on theCzech Historical Atlas. The database was published in the form of a web application that allows theuser to reveal and analyse associated information about historical atlases across interactivedashboards. To improve the information value of the database, the authors decided to arrangefurther possibilities of data excerption with the use of specialized data visualization methods thatmay reveal additional information and new phenomena which are not clearly visible from thedatabase itself. The performed analyses supplement the paper in the form of diagrams and chartsand present the data from various perspectives with the focus on similarities and differences betweenthe cartographic and the thematic content of the historical atlases in the publishing countries, thechanges in the thematic focus of the atlases or changes in the use of methods of thematiccartography in atlas works over time. The authors also deal with relations between the thematicfocus of the atlas and the applied methods of thematic cartography. All analyses are performed onthe sample of 88 atlas works