All creatures presumably have some kind of awareness of their surroundings, and there is abundant evidence that some kind of mental imagery is a normal activity of the brain in at least the higher animals. How this takes place is still a mystery. This imagery ranges from purely pictorial recall such as a remembered face to artificial con-structs such as might occur in a fanciful dream. An indis…
Maps are graphic representations of the cultural and physical environment. Two subclasses of maps exist: general-purpose (reference) maps and thematic maps. This text concerns the design of the thematic map, which shows the spatial distribution of some geographical phenomenon. Map scale, or the amount of reduction of the real world, is critical to the cartographer, since it determines selection…