Map Projections:
Equal Area
Hammer-Aitoff
Distance from Washington D.C. to Kabul: 8,347 miles
Boone
Distance from Washington D.C. to Kabul: 6,710 miles
Equidistant
Equidistant Conic
Distance from Washington D.C. to Kabul: 6,938 miles
Plate Carree
Distance from Washington D.C. to Kabul: 10,074 miles
Conformal
Mercador
Distance from Washington D.C. to Kabul: 10,144 miles
Gall Stereographic
Distance from Washington D.C. to Kabul: 7,159 miles
Map projections serve as a way for to portray the third dimensional surface of the earth into a two-dimensional representation in a map. Because the surface of the earth cannot be perfected projected onto a map, distortions result. These distortions can include inaccuracies in distance, conformity, and area. There are different types of map projections that preserve these aspects. Equal area maps have the same proportional relationship to the areas of Earth they represent. Equidistant maps portray distances from the center of the projection to other points on the map. Lastly, conformal maps are used when the scale of a map is the same in any direction.
It is important to consider the differences in these map projections. This is evident because measurements and other information, depending on the type of projection used, can vary in value. For example, this is shown throughout the distance between Washington D.C. and Kabul we were asked to find in this lab. The difference in map projections are not only very visually apparent, but their distance values are different too. For example, the equidistant projection of the Equidistant Conic map was measured at a distance of 6,938 miles between D.C. and Kabul. Another projection, the conformal Mercator map measured its distance at 10,144 miles.
A definite pitfall with different map projections is that values can certainly become misinterpreted if one was not careful about matching up the correct data set with the correct map projection. As seen before, distance vary greatly between different map projections, sometimes by several thousand miles, as in the example in our lab.
However, different map projections do hold potential. The availability of different types of projections allow for a wide range of flexibility when creating maps. Information and data sets are better depicted according to the map maker's personal preferences and needs. Map projections allow accurate ways to a depict different forms of data.
Map projections serve as a way for to portray the third dimensional surface of the earth into a two-dimensional representation in a map. Because the surface of the earth cannot be perfected projected onto a map, distortions result. These distortions can include inaccuracies in distance, conformity, and area. There are different types of map projections that preserve these aspects. Equal area maps have the same proportional relationship to the areas of Earth they represent. Equidistant maps portray distances from the center of the projection to other points on the map. Lastly, conformal maps are used when the scale of a map is the same in any direction.
It is important to consider the differences in these map projections. This is evident because measurements and other information, depending on the type of projection used, can vary in value. For example, this is shown throughout the distance between Washington D.C. and Kabul we were asked to find in this lab. The difference in map projections are not only very visually apparent, but their distance values are different too. For example, the equidistant projection of the Equidistant Conic map was measured at a distance of 6,938 miles between D.C. and Kabul. Another projection, the conformal Mercator map measured its distance at 10,144 miles.
A definite pitfall with different map projections is that values can certainly become misinterpreted if one was not careful about matching up the correct data set with the correct map projection. As seen before, distance vary greatly between different map projections, sometimes by several thousand miles, as in the example in our lab.
However, different map projections do hold potential. The availability of different types of projections allow for a wide range of flexibility when creating maps. Information and data sets are better depicted according to the map maker's personal preferences and needs. Map projections allow accurate ways to a depict different forms of data.
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