6) Geographic Area IU.
a) Problem: Users need features related to geographical
analysis.
b) Context of application: The user demands the
visualization of data based on geographical attributes.
c) Solution: Organize the information contained in the
dataset in function of existing geographic information in a
geographical-oriented interface. This solution deals with
Challenge 5.
d) Motivation: The analysis based on geographic
information is a common practice in data-analysis applications.
For instance, users can see data related to their source locations
in order to detect geographical relationships.
All Interaction Units are represented in Fig. 1 ordered by
numbers from 2.1 to 2.6, belonging to level 2.