作者: Maurizio Rafanelli , Fabrizio L. Ricci
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摘要: In this paper we would like to present a proposal for visual interface which can be easily used by statistical users. This interface, from graphical point of view, is based on an extension the Grass logical model. The commands manipulation entities were realized in are macro-data algebra defined Mefisto functional By means it possible browse database, select topic-classified and manipulate these carrying out queries Staquel query language. has been definition windows graphic visualization entities, direct manipulation, data analysis options, information functions (planned so far), print format expression language