Formed in
2009, the Archive Team (not to be confused with the archive.org Archive-It Team) is a rogue
archivist collective dedicated to saving copies of rapidly dying or deleted websites for the sake of
history and digital heritage. The group is 100% composed of volunteers and interested parties, and
has expanded into a large amount of related projects for saving online and digital history.
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Cartograms
As mentioned in the introduction,
cartograms are maps that can handle topology but who are geometrically
distorted. Maybe the most famous example of a cartogram is the London Tube Map
made by Harry Beck. If you overlay this map with a topographic map of London,
you can see that these maps do not have the same geometrical shape. Beck's
idea was to make a compact map which displayed the sequence of
metrostations. The purpose of the map is very important. A map of
the metro stations for example does not have to guide people through
the streets of London, but only have the purpose to show people the sequence
of metro stations. The geometry is less important than the topology
and thus can be distorted.
Another good example of a cartogram is
the so called area- based cartograms. The principle behind this cartogram
is that the color and the area of the data is displayed against
their values. Polygons with a relatively high value of the displayed attribute
look like they are blown up. Polygons that have a relatively low
value look very skinny. During the course we made a cartogram of the tweets
that were post from all over the world (figure 7). Result is the most tweets
were post in the USA. The classification used is head/tail breaks which
is displayed by the far more smaller parts that bigger parts.
Figure 7. Cartogram of the
world tweets
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