Maps have been a successful form of representation for centuries by making the world understandable through systematic abstraction that retains the i… - Alan MacEachren

According to Charles W. Morris, syntactics is the relation between a given sign-vehicle and other sign-vehicles. There is a critical distinction here (that many cartographers have missed) between Morris's "syntactics" and the linguistic subcategory of "syntax". While syntax puts emphasis on word order and parsing (i.e., on a linear sequence), syntactics is much broader in scope. Syntactics allows for any kind of among-sign relationships. Morris (1938, p. 16) makes this point explicitly in his statement that there are "syntactical problems in the fields of perceptual signs, aesthetic signs, the practical use of signs, and general linguistics."... At least three kinds of sign relationships seem to fall under Morris's umbrella of syntactics (Posner, 1985, in French; cited in Nöth, 1990, p. 51). These include: (1) ”the consideration of signs and sign combinations so far as they are subject of syntactical rules” (Morris, 1938, p. 14), (2) ”the way in which signs of various classes are combined to form compound signs” (Morris, 1946/1971, p. 367), and (3) ”the formal relations of signs to one another” (Morris, 1938, p. 6).

When visualization tools act as a catalyst to early visual thinking about a relatively unexplored problem, neither the semantics nor the pragmatics of map signs is a dominant factor. On the other hand, syntactics (or how the sign-vehicles, through variation in the visual variables used to construct them, relate logically to one another) are of critical importance.

Cartography as a discipline has a significant stake in the evolving role of maps within systems for scientific visualization, within spatial decision support systems, within hypermedia information access systems, and within virtual reality environments.