Abstract
ABSTRACTGittok (pronounced: jee-tock, ʤi:tɒk) is a free, open-source software tool with slides and tutorials for assisting with the education of geographic information technology (GIT). It has been developed for beginners who aim to become researchers or developers in the field of GIT, and for engineers who offer GIT applications that comply with the geographic information (GI) standards. In this paper, first, harmonization between conceptual data modeling using the General Feature Model (GFM) and conceptual representation modeling using the General Portrayal Model (GPM) are discussed. The gittok GFM, which applies object-oriented modeling, can be regarded as being an extension of the conventional layer-based model. The gittok GPM is a comprehensive meta-model for defining maps and lists. Lists, that is, sequence of feature identifiers and attributes for the GI representations, are defined under the harmonization between GFM. The author took charge of the first open seminar using gittok, held in Tokyo, Japan, in January 2016. Most of the participants were able to acquire the fundamental knowledge about GIT and the GI standards. Gittok is a useful tool for the GIT education, especially for higher education students and engineers who offer GIT applications in compliance with the GI standards.
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