Geography Reference
In-Depth Information
Table 1 Examples of existing studies and particular construction methods and data types used
No of
spatial
units
No of
rings
Continuous rings
(vertical/horizontal)
Author (s)
Symbolization
Data type
Huang
et al. (
2008
)
12-24
N/N
Hue
25
Spatial/
temporal
Zhao
et al. (
2008
)
Up to
96
Y/Y
Hue
47
Spatial/
temporal
Battersby
et al. (
2011
)
2-5
Y/N
Saturation/
shade
46
Spatial
Fede
et al. (
2011
)
4-5
N/N
Saturation/
texture
46
Spatial
Stewart
et al. (
2011
)
2-5
Y/N
Saturation
46
Spatial
Fig. 1 Internal aspects of ring maps construction
only horizontal and vertical continuous rings for a selected geographic region,
which is a different concept of making ring maps from that mentioned in the
original studies (discussed above).
Based on the varied options in cartographic visualization of ring maps, we
decided to take the first step in the external research direction by starting with a
comparison of the ring map with other existing multivariate visualization methods.
Evaluation of the cartographic methods and products is a broad issue with different
approaches—from qualitative (e.g. user questioning) to quantitative
(e.g. multicriterion evaluation)—both for exploratory geovisualization (Koua
