Wednesday, May 16, 2012

Week 6 Lab

         Using map projections is an extremely helpful tool in today's society, but there are a few pitfalls involved with it. Map projections are 3D models placed onto 2D references, and there are many different types. Some preserve the equal area of the map, some the equal distance, and some are conformal. The six above have two representations of each.
         Map projections help give a greater sense of the world around us. As previously stated, there are many different kinds, and for each kind, there is a specific projection that is appropriate for the information that is being shown. Projections are important because they help map users create maps, most of which are quite unique and some that are not very practical, but still interesting. 
         The downside to map projections is that they do not always present a picture of the Earth that is completely accurate. For instance, the state of Alaska looks extraordinarily larger than it really is on the Mercator map projection, and the Behrmann Equal Area Cylindrical map projection presents a map that makes the northern and southern areas appear smaller in comparison to areas around the equator. Also, as shown above, distances can be warped and skewed based on what type of measuring system is used. 
         Map projections are useful devices for creating and manufacturing maps, even though they possess some faults. These problems are not grave, however, if the person reading the maps knows about the differences and can pick the correct map for the information they desire.

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