Geography Reference
In-Depth Information
Figure 4.4
Criteria for orienting individual tracks. (a) Baselines; (b) phylogenetic
information; (c) main massing.
In order to draw individual tracks on maps, authors have used different
symbols to indicate localities (e.g., circles, triangles, squares, stars) and dif-
ferent types of lines to connect them (e.g., dotted, solid). The representation
of two or more individual tracks on the same map is problematic. Fortino
and Morrone (1997) suggested that a solid line provides the best visualiz-
ation and will not be confused with lines representing borders on the map
(
fig. 4.5a
). In order to avoid confusion between taxa and to improve legibility,
localities should be represented with different symbols, such as circles and
squares. Triangles should not be used because they can be confused with
the arrows that indicate the direction of oriented tracks. If more symbols are
needed, squares and circles can be black, white, or, if possible, in different
colors. In order to represent a baseline, two lines parallel to each other and
perpendicular to the track (
fig. 4.5a
) may be used to emphasize the idea of
rupture and separation (Fortino and Morrone 1997).
