Geographic Bounds: The extent of the geographical area mapped can have an effect on a full slew of making decisions from the projection won’t to knowledge and symbology decisions. The geographical area of the map ought to be restricted to the extent of the map’s subject knowledge.
Symbolization: the alternatives of symbology will build or break a map. the color decisions, line widths, icons, and labeling (more on labels next) all have an effect on the readability, and thence message, of the map. think about the meant audience of the map once choosing style decisions. A map geared toward youngsters would possibly involve brighter colors and fewer complexness within the symbology. A general audience map would possibly involve the employment of laicizing language.
Legend: While the proliferation of custom-made Google Maps has contributed to the democratization of GIS knowledge creation, it’s additionally resulted in an exceeding slew of maps either no legends or poor legends. Legends area unit the key want to decipher the symbology on the map. they have to be decipherable, not too littered, and straightforward to grasp. Once color ramping is employed, care should be taken to victimization colors that area unit simply discernible from one another with the eye. Within the legend below, the color ramp for uses color shading that produces it troublesome to differentiate one archipelago ecozone from another.
Locator Map: Unless the map is geared toward an awfully specific knowledgeable audience or is of a geographic breadth (such as a national map or a world map), it is terribly useful to incorporate a smaller inset map showing the placement of the mapped space. This helps to any orient the viewer inputting the geographic context of the map.
Background knowledge Elements: There area unit 2 main reasons to incorporate knowledge on a map: to support the topic matter of the map and to supply orientation (e.g. streets, cities, points of interest). It’s necessary to decide on the knowledge that’s relevant and current to the map.