Adi Eyal ANALYSIS: Why Africa is larger than maps cause us to think it is

Maps influence the way we understand the world. The most common map projection is a relic from the Euro-centric colonial days - and as a result Africa appears smaller than it actually is. Adi Eyal explains.

A few weeks ago President Jacob Zuma stated that all the continents in the world would fit into Africa.

I thought it useful to visualise the process of trying to stuff countries into the African continent. It turned out that all the countries of the world would fill Africa four times over (excluding Antarctica, but I’ll get back to this later).

Unfortunately, this wasn’t a trivial task. You see, the problem is that the world isn’t flat. The maps that we generally use are planar and rectangular while the Earth is a sphere. It’s really difficult to flatten a sphere into a rectangle. Try peeling an orange and you’ll realise what contortions you need to go through in order to do it. Now imagine you were doing that with the Earth. Countries in your rectangular orange peel would barely resemble those on a sphere.

orangepeelsSo what to do? The process of converting from a 3D object (say the Earth) into a 2D plane (say a map) is called projection. Imagine you were standing in the middle of a translucent globe with a torch. Standing in the centre and shining your light through the continents would project them onto the wall. Doing this, you would only manage to project a part of the Earth onto the wall.

Suppose you rolled the Earth continually on the wall as you went. That way you would manage to project all the way around the Earth onto your 2D plane. Alternatively, think of the world as a round stamp covered in ink. As you rolled it on a piece of paper, you would leave continent-shaped ink marks on the paper.

Such a project would work well enough at the equator but things start to get weird the further you go north or south as shapes begin to stretch. Over the years, cartographers have devised different ways of addressing this problem. Unfortunately due to our orange peeling problem, each projection needs to make certain compromises.

proj_grinten

 

 

 

 

 

 

 

 

 

 

For instance Van der Grinten’s world projection tries to make an aesthetically pleasing map but the result doesn’t maintain the size of countries and shapes tend to distort, especially at the poles.

proj_albers

 

 

 

 

 

 

The Albers equal-area conic projection ensures that areas of countries are preserved but shapes are not. This is a good projection for proving President Zuma’s claim to be incorrect.

proj_sinu

 

 

 

 

 

 

Some of them are plain weird like this Sinu-Mollweide projection.

But geometry aside, maps are political and influence the way we understand the world. Here is the standard Mercator projection that we are all familiar with.

Notice how small Africa is? Europe and North America are larger than they should be. The Mercator map is centred on Greenwich – an historic artefact as a result of the publication of a series of maps by a British astronomer. Previously, Paris was considered to be the centre of the map. This map is a relic of Euro-centric colonial days.

Another thing to consider is why north happens to be up? There is no concept of up in space. All of our maps could quite conceivably show Africa at the top and Europe at the bottom. Why not?

It’s somewhat mind-blowing when you look at it but not at all unreasonable. Surprisingly, maps were not always drawn with north at the top. Egyptian maps were oriented with the flow of the Nile which drains into the Mediterranean. Upper Egypt is located further to the south and confusingly, Lower Egypt is to the north.

In fact, some older maps have east at the top. Interestingly, the etymology of the word ‘orientation’ comes from the world Orient, which may explain the reason for east-up maps. (Note: Read more about this history of map orientation here.)

This north-south divide has negative connotations. South is associated with poverty and lack of development. These negative connotations don’t only apply to the developing world. Northern Italians are considered hard working while Southerners are lazy and less educated. Our language is also full of positive connotations for “up”, for example “on top of the world” and negative for “down”, such as “down in the dumps”.

It turns out that upside-down maps are a thing. One of the first of these was produced by an Australian tired of his country being called “Down Under”. He turned the traditional orientation on its head, literally. You can find an interesting article on these subversive maps here.

In summary, maps, as with many visualisations, are simply representations of the world through the lens of their creator. The marketing industry is notorious for their use of misleading graphs and pie charts. Maps are no less immune to manipulation.

Adi Eyal is the director of Code for South Africa .

 

Image credits
Christopher Sessums (https://www.flickr.com/photos/csessums/11427686175/)
keishkakeishka (https://www.flickr.com/photos/keishka/2752119942/)
Gerry Machen (https://www.flickr.com/photos/gellscom/13331625404/)
fdecomite (https://www.flickr.com/photos/fdecomite/17311156985/)
Mike Bostock

© Copyright Africa Check 2017. You may reproduce this piece or content from it for the purpose of reporting and/or discussing news and current events. This is subject to: Crediting Africa Check in the byline, keeping all hyperlinks to the sources used and adding this sentence at the end of your publication: “This report was written by Africa Check, a non-partisan fact-checking organisation. View the original piece on their website", with a link back to this page.

Comment on this report

Comments 11
  1. By CJB

    I am used to Africa Check trying to defend the ANC, but this obfuscation is crazy.

    There is just no way you can “prove” Jacob Zuma’s ignorance is based in reality. Get used to it.

    Talking of “projections” how about dealing with the ANC narratives that
    (1) All whites are racists
    (2) The DA plans to bring apartheid back
    ?

    vote
    Reply Report comment
    • By Adi Eyal

      Hi CJB

      The article started with the intent to visually prove Zuma wrong. Funnily enough, despite his bungling of the numbers (and the facts) I began to understand the intention of what he was saying. Africa is the second largest continent and has the second largest population in the world. The common naive understanding by notherners of ‘Africa is a country’ might stem partly from the fact that it is under-represented in the tradition Mercator project. This may affect the perception of Africa’s importance on the world stage.

      vote
      Reply Report comment
  2. By Murray Cronje

    I disagree. If you look at the actual area of each continent in millions of square kilometres, then Africa is 30.22, Asia is 44.58, Oceania is 8.5, Americas is 42.55, Antarctica is 14 and Europe is 10. How do you squeeze 119.63 into 30.22?

    vote
    Reply Report comment
  3. By Paul

    Thanks for the article, usually enjoy Africacheck’s take on fact, but possibly you could’ve asked for the input of a cartographer and historian? The Mercator projection, as described in the wiki link in the article was designed for nautical use and developed through mathematics, not politics as you allude to in the article. Additionally, the history of the prime meridian has a bit more to it than simply “euro-centric colonial days”. To say that the Mercator projection is a relic is also harsh, Google maps and the like, use a variant of the Mercator projection, and that is still very current. I’m no expert in this field, merely an interested individual that enjoys maps and the history they tell, but projections are usually all about maths, navigation and calculations. However, what graphics are displayed on maps is a different story and that’s where geopolitics and history has a role. Little bit more fact in this one please.

    vote
    Reply Report comment
    • By Africa Check

      Thank you for your comment and interest in Africa Check, Paul. On this section of the website we invite experts and key people in subject areas to argue, analyse and comment on how facts are presented. It is therefore not a fact-check as such but written from this person’s point of view, meant to engender debate. So thanks for interacting!

      vote
      Reply Report comment
    • By Adi Eyal

      Hi Paul

      I have heard this complaint a few times about the article which puzzles me. Careful reading of the text reveals that no-where does it claim that the creation of the map was politically motivated. The gist of the article is that the current Mercator projection has an effect on perceptions of the size (and by extension the importance) of Africa.

      Regarding the word relic – I thought for a moment that I didn’t understand the meaning of the word. Looking it up in the dictionary is relieving. It is clear that the word is correctly used in the article. The choice of Greenwich as the prime meridian has some cartographical relevance (although it used to run through Paris). The choice of placing it at the centre of the standard map is Euro-centric and a reminder of a time when Europe was considered the centre of the political world. Cartographers could quite easily have chosen to place it at the far left of the map , i.e. the zero timezone could be at the start and we could have avoided the confusing negative numbers in timezones.

      vote
      Reply Report comment
  4. By Stella

    This article is of no real use to anyone, because it doesn’t provide at any point a map showing exactly the size of Africa.
    Waste of time for me here.

    vote
    Reply Report comment

Leave a Reply

Your email address will not be published. Required fields are marked *

*

Africa Check encourages frank, open, inclusive discussion of the topics raised on the website. To ensure the discussion meets these aims we have established some simple House Rules for contributions. Any contributions that violate the rules may be removed by the moderator.

Contributions must:

  • Relate to the topic of the report or post
  • Be written mainly in English

Contributions may not:

  • Contain defamatory, obscene, abusive, threatening or harassing language or material;
  • Encourage or constitute conduct which is unlawful;
  • Contain material in respect of which another party holds the rights, where such rights have not be cleared by you;
  • Contain personal information about you or others that might put anyone at risk;
  • Contain unsuitable URLs;
  • Constitute junk mail or unauthorised advertising;
  • Be submitted repeatedly as comments on the same report or post;

By making any contribution you agree that, in addition to these House Rules, you shall be bound by Africa Check's Terms and Conditions of use which can be accessed on the website.

*