![]() ![]() This means that one unit on the map represents 10,000 units on the ground. ![]() For example, consider a map with an RF of 1:10,000. In other words, any unit of measure can be used to interpret the map scale. One of the benefits of using a representative fraction to describe scale is unit neutral. The numerator, which is always set to one (i.e., 1), denotes map distance, and the denominator denotes ground or “real-world” distance. The representative fraction (RF) describes scale as a simple ratio. Scale bars are usually used on reference maps and allow map users to approximate distances between locations and features on a map and get an overall idea of the map’s scale. Map scale can also be portrayed graphically with a scale bar. For example, it is common to see “one inch represents one kilometer” or something similar written on a map to give map users an idea of its scale. Map scale can be represented by text, a graphic, or some combination of the two. Map scale refers to the factor of reduction of the world so it fits on a map. Nonetheless, all maps reduce or shrink the world and its geographic features of interest by some factor. What exactly is meant by “manageable” is open to discussion and depends on the purpose and needs of the map at hand. One of the most significant challenges behind mapping the world and its resident features, patterns, and processes is reducing it to a manageable size. Moreover, map projections are concerned with moving from the three-dimensional world to the two dimensions of a flat map or display. Coordinate systems help us define the positions of features on the earth’s surface. Map scale is concerned with reducing geographical features of interest to manageable proportions. The essential cartographic considerations are map scale, coordinate systems, and map projections. Several other formal and informal mapping conventions and characteristics can be identified, many of which are taken for granted. Though this may not always be the case, many map users expect the north to be oriented or coincide with the top edge of a map or viewing device like a computer monitor. For example, one of the most recognized mapping conventions is that “north is up” on most maps. Mapping or cartographic conventions refer to the accepted rules, norms, and practices behind the making of maps. Mapping conventions facilitate the delivery of information in such a manner by recognizing and managing the expectations of map users. For a map to be of value, it must convey information effectively and efficiently. The central purpose is to provide relevant and valuable information to the map user. Understanding and meeting the expectations of map viewers is a challenging but necessary task because such expectations provide a starting point for creating any map. However, it is essential to note that such expectations also change with increased exposure to maps. Such expectations are formed and learned from previous experience by working with maps. ![]() However you look at the world, whether it’s with a globe, atlas or computer, it will always be fascinating and beautiful.\)Īll map users and viewers have certain expectations about what is contained on a map. The photos are put together like a huge jigsaw puzzle, which means we can view whole continents or even people’s back gardens. They’re even more detailed because they use photos taken by satellites and drones. They used to be hand-drawn to scale, from careful measurements of the distances and angles between landmarks.īut these days you can use apps on your computer or tablet. This does have its drawbacks, as the Earth is round, but pages are flat, so what we see on a map is slightly distorted.Globes and maps are how we’ve seen the world for hundreds of years. An atlas has pictures of the same places as the globe but they are spread out over the pages, which allows you to see the world in more detail. Instead, it’s much easier to use a map or a book of maps called an atlas. Although I love my globe, it’s a bit awkward to carry around. It shows all seven continents, Europe, Africa, North America, South America, Asia, Oceania and Antarctica. This one shows all the countries of the world, almost 200, including the UK. ![]() Oh hello! I’m just working out where I am by using this world, er…globe to give it its proper name.Ī globe is a model of planet Earth, showing how it looks from space. ![]()
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