Abstract
The concerns that search the representation graphical of the objects that composes the geographic space sends for the Thematic Cartography the function to guide and to organize the way most correct of if presenting one given information in the “paper”. One of the main objectives are facilitate the undestanding of the subject to the people. Under this aspect, the cartographic document acquires great expressivity, therefore, determines a set of signs that translate a language, an idea and a communication by means of a system of symbols, object of study of the Graphic Semiology. This in turn, gives the lines of direction to evaluate the advantages and the limits of the visual variables, used in the representation process, beyond articulating the rules of rational use of the grammar of the cartographic language. In this way, this paper wants to speech about the graphic communication, with enfazis oin the conceptual basis and the importance of this concepts to understand the cartographic language.
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