The wood and the trees - The Visualization of Spatial Social Structure - page 226

The Space/Time Trend
of Unemployment in
Britain, 1978-1990.
(On a 1981 County population cartogram,
outer rings being most recent years -
scale indicating deviation from
space/time independence.)
50% under
10% under
0%
10% over
50% over
Figure 8.1 Deviations from expected levels of unemployment are shown here,
superimposed as rings around the 64 counties on the equal population cartogram.
This method does not work too well. Although some sort of pattern can be dis-
cerned, the use of these symbols breaks up the picture and fails to produce an
overall impression. The success or failure of an image often depends on these two
factors.