Figure 6b) and watermark style in the
iOS 6 mapping apps (not shown here).
As we see, this difference in the labeling
of continent names occurs in both landscape and portrait modes for the iOS 6,
iOS 7, and iOS 8 mapping apps.
Seeing the whole world is important
if a user wants to observe a feature’s behavior over the whole world with one
view rather than having to pan the map
to see the full extent of the feature’s
behavior. Figure 7a and Figure 7b are
examples of spatially referenced news
clusters from NewsStand13, 28, 34 using the
iOS 6 and iOS 5 mapping apps, respectively, while Figure 7c and Figure 7d are
spatially referenced mentions of diseases from the same system using the iOS 6
and iOS 5 mapping apps, respectively. A
slider serves to vary the displayed clusters or disease mentions.
Many of the manipulation-presen-tation-consistency issues we have
discussed here could be resolved by
caching map data, as discussed by, for
example, Liu et al.,
15 and dynamic map
labeling by, for example, Peng et al.,
which are directions for future study.
We now review some manipulation-presentation-consistency issues for
the various mapping apps we found
noteworthy. However, we first re-em-phasize that our aim here is not to criticize Apple, Google, or Microsoft. Instead, it is to use examples motivated
by Apple’s foray into the maps space
where Google and Microsoft have a
longer history due in part to their work
on Microsoft Virtual Earth and Google
Earth and Maps, to point out the difficulty of such a task, and the need to
consider centuries-old principles and
practices in mapmaking.
Despite the obvious similarities in
Android and iOS 5 mapping apps, we
identified important differences, including the way they deal with the whole
world—both portrait and landscape—
where only the iOS 5 mapping app provides a full view at the maximum zoom-out level.
From our limited comparison, as
summarized in the table, we conclude
that newer is not always better in that
the iOS 5 mapping app is probably
still best with respect to our four properties of presentation consistency—
hierarchical, sibling, panning, and
Figure 6. World map in landscape mode demonstrating maximum zoom-out level for
(a) iOS 5 on an iPod Touch, (b) iOS 8 on an iPhone 5, and (c) Android mapping apps.
Figure 7. Examples of spatially referenced news clusters with (a) iOS6 mapping app and
(b) iOS 5 mapping app and examples of spatially referenced mentions of diseases using (c)
iOS 6 mapping app and (d) iOS 5 mapping app.
(a) iOS 6 (b) iOS 5
(c) iOS 6 (d) iOS 5
(a) iOS 5
(b) iOS 8