Map Projections
Map Projections
A way of representing the earth’s curved surface on a flat surface of map is known as map projections. A globe represents the most accurate position, place of different things present on earth but a globe is not practical for many of the functions for which we require a flat map. Map projections help us to represent most of the earth’s surface at a wide variety of scales, on a flat, easily transportable surface.
A globe is the true representation of distance, direction, area, shape, and proximity. A flat map distorts these properties for which a cartographer must see to that which characteristics to preserve, which to distort and how much distortion can be done. Henceforth, a flat map cannot have all the globe features.
There are a much of unusual map projections. The process of transferring information from the Earth to a map causes every projection to misrepresent at least one aspect of the real world- either, shape, area, distance, or direction.
Each map projection has advantages and disadvantages; the appropriate projection for a map depends on the scale of the map, and on the purposes for which it will be used. The properties of a map projection may also influence some of the design features of the map. Some projections are good for small areas, some are good for mapping areas with a large east-west extent, and some are better for mapping areas with a large north-south extent.
Map projections comprises many problems and techniques, including: * Measuring Earth's shape and features * Collecting and storing information about terrain, places and people * Adapting three-dimensional features to flat models (the main concern) * Devising and designing conventions for graphical representation of data * Printing and publishing information.
If we compare the above two pictures, we could easily see that how the positions and scales of different areas of the earth has been which makes the globe reading and flat
A way of representing the earth’s curved surface on a flat surface of map is known as map projections. A globe represents the most accurate position, place of different things present on earth but a globe is not practical for many of the functions for which we require a flat map. Map projections help us to represent most of the earth’s surface at a wide variety of scales, on a flat, easily transportable surface.
A globe is the true representation of distance, direction, area, shape, and proximity. A flat map distorts these properties for which a cartographer must see to that which characteristics to preserve, which to distort and how much distortion can be done. Henceforth, a flat map cannot have all the globe features.
There are a much of unusual map projections. The process of transferring information from the Earth to a map causes every projection to misrepresent at least one aspect of the real world- either, shape, area, distance, or direction.
Each map projection has advantages and disadvantages; the appropriate projection for a map depends on the scale of the map, and on the purposes for which it will be used. The properties of a map projection may also influence some of the design features of the map. Some projections are good for small areas, some are good for mapping areas with a large east-west extent, and some are better for mapping areas with a large north-south extent.
Map projections comprises many problems and techniques, including: * Measuring Earth's shape and features * Collecting and storing information about terrain, places and people * Adapting three-dimensional features to flat models (the main concern) * Devising and designing conventions for graphical representation of data * Printing and publishing information.
If we compare the above two pictures, we could easily see that how the positions and scales of different areas of the earth has been which makes the globe reading and flat