Need Of Map Projection

The primary purpose of map projection is to create an easier way to measure distances, calculate areas, determine azimuth, and find the shortest route. Similarly, it is not easy to compare two natural regions on a globe. Likewise with the earth—if we want to make a map, we need to distort the earth’s surface to flatten it.

Some projections preserve distance or true direction, some maintain correct shapes, and others preserve the property of areal size. Every projection has its own set of advantages and disadvantages. The earth is three dimensional, and it is a challenge to show information in 3d to communicate with others.

There is no best projection.

For practical reasons, using a flat sheet is. Need formapprojection the need for a map projection mainly arises to have a detailed study of a region, which is not possible to do from a globe. Three of these common types of map projections are cylindrical, conic, and azimuthal. • it is the representation of the objects and information on a curved surface in a plane using mathematical and geometric relations.