![]() These maps are accurate at the equator however, the north and south poles become very distorted, where the earth starts to curve. This projection uses a rectangle map with straight coordinate lines (both vertical and horizontal), and when you wrap it around a globe, it produces a cylinder or tube shape when the edges of the paper touch each other. 3 - A flat/plane-based projection, producing a circular map. This isn't the most common of map projections.įig. ![]() From the viewpoint of the top or bottom of the globe, the projection can display one/part of the hemispheres. This map projection is flat-based, also named a plane projection. They all project the world in slightly different ways, providing different levels of distortion. There are 3 different types of map projections. ![]() When the paper is further away from the globe, this distortion will occur. When the paper touches the globe, there will be an accurate projection. This means either the paper or the globe somehow needs to change to accommodate each other (in this case, the paper). If this paper is placed over a globe, it won't fit properly, as they are both different shapes. To visualise this projection, think about placing a piece of paper over a globe this is how a map can be constructed. This is just the X and Y axis most familiar in mathematic studies. Upon projection, these latitude and longitude lines are switched to the Cartesian Coordinate System. 2 - Latitude and Longitude lines of the Earth. Longitude lines are vertical, measuring east and west of the Meridian line, which runs through Greenwich in England.įig. A latitude line is horizontal, showing the distance from the equator (north or south). On a globe, there are lines of latitude and longitude. Globes are also useless at showing detailed information imagine trying to find the directions to the local bakery using your pocket globe! How does this projection work? This would be relatively impractical, however. This means we'd carry our own globes wherever we went. If it were easy to do so, the world could be represented in its natural form a sphere. 1 - how would you project our spherical earth onto something flat? Why are map projections important? Our world isn't flat, but when we look at maps, it's been manipulated in a way that we can view it from a flattened perspective.įig. It involves transferring latitudes and longitudes of our spherical earth, which is 3D, onto a flat and 2D surface. A map projection is a method of showing our earth (or smaller sections of it) on a flat surface.
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