Why is a mercator projection map distorted




















This does come with the drawback that areas do suffer from quite promiment distortion at higher latitudes. It was first used by Flemish cartographer Gerardus Mercator in The Miller projection is a modified Mercator, designed by Osborn Miller in Its area distortion is less than the Mercator projection but that comes at the expense of introducing a little bit of shape distortion.

This makes it a useful compromise. The Winkel-Tripel projection is derived from an azimuthal projection that also tries to minimize all three kinds of distortion. It's become very popular since National Geographic adopted it for their world maps.

It was designed in by German cartographer Oswald Winkel. Another compromise projection, designed "to look right" by Arthur Robinson in It was the predecessor of the Winkel-Tripel projection at National Geographic and has also been used exstensively by Rand McNally for their world maps. When picking a projection for your map consider what the purpose and focus of your map are but also consider the space available.

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Download the mobile app. You've been signed up! Follow us on social media Facebook. No, thanks That's okay. This happens because no map projection is perfect. Each map projection has a problem with distortion. When the earth is projected onto a flat surface there are at least four different types of distortion: distance, direction, angle, and area. It is impossible to preserve all four means of distortion on one flat projection. A melted crayon, a deflated balloon, a CD or DVD with scratches that no longer plays correctly — these things have all been affected by distortion.

Other examples of distortion are things like your reflection in a broken mirror or the sound of your voice underwater. If an audio signal level is too high for a particular component to cope with, then parts of the signal will be lost. This results in the rasping distorted sound. All in all, it is up to the cartographer to determine what projection is most favorable for its purpose. When the earth is projected onto a flat surface there are at least four different types of distortion: distance, direction, angle, and area.

It is impossible to preserve all four means of distortion on one flat projection. In an equal-area map, the shapes of most features are distorted. No map can preserve both shape and area for the whole world, although some come close over sizeable regions. If a line from a to b on a map is the same distance accounting for scale that it is on the earth, then the map line has true scale. We have many different map projections because each has different patterns of distortion—there is more than one way to flatten an orange peel.

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