Tuesday, November 13, 2012

Diagrams versus Maps


In this week’s reading, the section called The prototype for the modern map immediately caught my eye because I do a lot of cartographic design for work and that is the primary reason I’m interested in graphic design—to make better maps. In this section Meggs introduces the concept of a cartographic diagram by presenting Henry Beck’s railway map of the London underground. This was indeed the first of its kind, where Beck unbound his design from conventional cartographic rules of orienting the map elements (stations, railways, landmarks, etc.) according to their actual geographic locations. Instead he took a different perspective of the usefulness of the map and allowed detail to be seen where it was needed most by varying the scale within the one map. This allowed the user to see the busyness of the cluttered railway network of downtown while keeping the far out reaches of the network on the same page. Unlike most maps before it (below top), Beck’s diagram includes only one essential geographic feature for reference (the River Thames) and eliminated the roads and other confusing features which distract from the purpose of the map—navigating the railways (below bottom).
 
Beck’s diagram map continues to influence transit maps around the world and I will display a few and describe how they continue to use his innovations.  In the Hong Kong transit maps below, the one on the top shows the actual extent of the transit system by using the physical location of the rails and stations but the one on the bottom reduces the distance to the far reaching legs of the system. This reduction allows the map to show more detail in the center of the city while only losing detail where it is not needed.

Since this is a graphic design class I should also emphasize the artistic qualities of Henry Beck’s map that have evolved throughout time.  By using only vertical and horizontal lines and 45 degree angles where the tracks change direction, Beck keeps the graphics consistent making the map visually pleasing as a whole. In the Stuttgart transit map below (top) you will notice that the transit lines are drawn only with 30 degree angles, giving it striking almost 3D effect. Beck also conventionalized the open circle as a station stop along a transit line in his diagram map. This can be seen even more drastically against the stunning black background of the Buenos Aires map below (bottom).
I hope by comparing some of the transit maps above you will not only appreciate the drastic influence Henry Beck had on converting transit maps to diagrams, but also understand the practical value and the artistic merit involved in doing so.

Image sources:

(in order of appearance) 







References:

Ovenden, Mark, 2003, Transit Maps of the World, Penguin Books, New York

 

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