What Projection Preserves Area?

What are the 4 types of map projections?

Three of these common types of map projections are cylindrical, conic, and azimuthal.Cylindrical Map Projections.

Cylindrical map projections are one way of portraying the Earth.

Conic Map Projections.

Azimuthal Map Projection..

Cylindrical ProjectionCylindrical Projection – Mercator One of the most famous map projections is the Mercator, created by a Flemish cartographer and geographer, Geradus Mercator in 1569.

Mercator projection, type of map projection introduced in 1569 by Gerardus Mercator. … This projection is widely used for navigation charts, because any straight line on a Mercator projection map is a line of constant true bearing that enables a navigator to plot a straight-line course.

What are the types of projections?

Projection Methods Used In Mechanical DrawingOrthographic Projection. Orthographic projection shows a 3D object in two dimensions so that you can see three views: the front view, side view and top view. … Axonometric Projection. Axonometric is another type of orthographic projection. … Oblique Projection. … Perspective Projection.

What are the 5 map projections?

Top 10 World Map ProjectionsMercator. This projection was developed by Gerardus Mercator back in 1569 for navigational purposes. … Robinson. This map is known as a ‘compromise’, it shows neither the shape or land mass of countries correct. … Dymaxion Map. … Gall-Peters. … Sinu-Mollweide. … Goode’s Homolosine. … AuthaGraph. … Hobo-Dyer.More items…•

What does the Robinson projection preserve?

The Robinson projection is a map projection of a world map which shows the entire world at once. It was specifically created in an attempt to find a good compromise to the problem of readily showing the whole globe as a flat image.

How do I choose a projection?

When you choose a projection, the first thing to consider is the purpose of your map. For general reference and atlas maps, you usually want to balance shape and area distortion. If your map has a specific purpose, you may need to preserve a certain spatial property—most commonly shape or area—to achieve that purpose.

Are world maps wrong?

That world map is wrong. Most might recognize the old world map from faded school textbooks. It’s called the Mercator projection. … The Mercator projection vastly exaggerates aged imperialist power, at the expense of developing countries and continents like Africa that are shrunk to inferiority.

What is wrong with the Robinson projection?

The Robinson projection is neither conformal nor equal-area. It generally distorts shapes, areas, distances, directions, and angles. The distortion patterns are similar to common compromise pseudocylindrical projections. Area distortion grows with latitude and does not change with longitude.

What is the disadvantage of the Robinson projection?

Advantage: The Robinson map projection shows most distances, sizes and shapes accurately. Disadvantage: The Robinson map does have some distortion around the poles and edges.

What map projection has the least distortion?

The only ‘projection’ which has all features with no distortion is a globe. 1° x 1° latitude and longitude is almost a square, while the same ‘block’ near the poles is almost a triangle.

What is the main drawback of Goode’s interrupted projection?

In 1923, J. Paul Goode merged the Mollweide (Homolographic) projection and the Sinusoidal projection to create Goode’s Homolosine Interrupted. The advantage of this projection is each of the continents are the correct size and in proportion to one another. The disadvantage is distance and direction are not accurate.

Which map projection should I use?

Use equal area projections for thematic or distribution maps. Presentation maps are usually conformal projections, although compromise and equal area projections can also be used. Navigational maps are usually Mercator, true direction, and/or equidistant.

What is the projection of a map?

In cartography, a map projection is a way to flatten a globe’s surface into a plane in order to make a map. This requires a systematic transformation of the latitudes and longitudes of locations from the surface of the globe into locations on a plane.

What is the most accurate flat map projection to use?

AuthaGraphAuthaGraph. This is hands-down the most accurate map projection in existence. In fact, AuthaGraph World Map is so proportionally perfect, it magically folds it into a three-dimensional globe. Japanese architect Hajime Narukawa invented this projection in 1999 by equally dividing a spherical surface into 96 triangles.

Which projection does National Geographic use now?

In 1998, the Winkel tripel projection replaced the Robinson projection as the standard projection for world maps made by the National Geographic Society. Many educational institutes and textbooks followed National Geographic’s example in adopting the projection, and most of those still use it.

Why are all world maps wrong?

This is especially obvious for maps that use certain projections—ways of representing the Earth’s curved surface on a flat map—such as the popular Mercator projection, which could be found on many 20th-century classroom walls. Mercator maps distort the shape and relative size of continents, particularly near the poles.

What is the problem with map projections?

Because you can’t display 3D surfaces perfectly in two dimensions, distortions always occur. For example, map projections distort distance, direction, scale, and area. Every projection has strengths and weaknesses. All in all, it is up to the cartographer to determine what projection is most favorable for its purpose.