Inappropriate use of the Mercator projection in world maps and the size disparities figuring prominently in Peters's arguments against the Mercator projection had been remarked upon for centuries and quite commonly in the 20th century. An example is that Greenland is exhibited in the same size as the continent of Africa when Africa in reality is fourteen times bigger than Greenland.
This reasoning has been picked up by many educational and religious bodies, leading to adoption of the Gall—Peters projection among some socially concerned groups, including Oxfam,  National Council of Churches New Internationalist magazine,  and the Mennonite Central Committee.
Some of the more common categories are: The challenge of any world map is to represent a round earth on a flat surface. The Mercator map on the right places the United States in the middle of the map.
The Mercator projection is Figure 2similar to Peters projection, a cylindrical projection with meridians and parallels mapped as straight lines, but with the advantage of having accurate angles.
Notable lines[ edit ] The developable surface may also be either tangent or secant to the sphere or ellipsoid.
Combination of the above: Accessed 8 September from About. In any case, Mercator was not the pervasive projection Peters made it out to be: If these lines are a parallel of latitude, as in conical projections, it is called a standard parallel.
However, picturing the light source-globe model can be helpful in understanding the basic concept of a map projection Choosing a projection surface[ edit ] A Miller cylindrical projection maps the globe onto a cylinder.
It was based on the Cahill projection designed in by cartographer and architect Bernard J. Hence the cartographic community viewed Peters's narrative as ahistorical and mean-spirited.
However, it is impossible to flatten a sphere without any complications, so the projected sphere will always have some distortions.
It replaces the traditional Mercator map style that many of us are familiar with. These surfaces are cylindrical e. By many cartographers had turned overtly hostile to his claims. On the map, as in reality, the length of each parallel is proportional to the cosine of the latitude.
Peters intention for making the projection was part that he claimed there were no useful equal area projections and part that he thought the Mercator map projection was displaying the world in an inaccurate way (USGS, ). The Gall–Peters projection is a rectangular map projection that maps all areas such that they have the correct sizes relative to each other.
Like any equal-area projection, it achieves this goal by distorting most shapes.
Peters is an equal-area projection which became the centrepiece of a controversy surrounding the political implications of map design. The argument goes something like this: Mercator inflates the.
In the Mercator projection, as another example, Greenland, which has million square miles, is shown as being equal to Africa, which has million square miles. The Peters Map site has an interesting short discussion of maps. Peters Equal Area World Map 24"x 36" paper folded map with bottom comparison panels () by Arno Peters; includes sidebar explanation panel by ODTmaps and Oxford Cartographers Oct 8, by Arno Peters and douglasishere.com The Mercator projection is (Figure 2), similar to Peters projection, a cylindrical projection with meridians and parallels mapped as straight lines, but with the advantage of having accurate angles.
This makes it good for navigation.Peters map projection