Maps are so ubiquitous that we neglect that we use maps on every day basis. Isolines of the imply numerical worth of wind velocity or isotachs are drawn on wind maps (charts); the wind resultants and directions of prevailing winds are indicated by arrows of various size or arrows with completely different plumes; traces of circulate are sometimes drawn.
Air temperature maps are compiled both from the precise values observed on the surface of the earth and from values transformed to sea level. Isanomals are drawn on maps of anomalies (for example, deviations of the imply temperature of each place from the imply temperature of the complete latitudinal zone).
Some maps, for instance the London Underground map , are topological maps Topological in nature, the distances are utterly unimportant; only the connectivity is important. Polar maps of the Arctic or Antarctic areas are conventionally centred on the pole; the route … Read MoreRead More