Problem: In what form should the information be displayed to the user?
Resulting Context: This is a rather high-level pattern; you are still left with a decision on exactly how you present the information. The answer partly depends upon the information's structure. If it's a hierarchy, for instance, you could use a Hierarchical Set. If the information is geographically structured, a map might be appropriate. Data sets of high dimensionality demand more sophisticated display techniques, often leading designers to combine the three spatial dimensions, color, and time; for very complex data sets, you may want to create Navigable Spaces that let the user wander through the complete information space.
The rest of the answer depends on what the user is trying to do -- whether
they need qualitative or quantitative information (or both), for instance,
or whether it's more important to find one datum, or to see that datum
in context with the rest of the data, or to get a big picture. If
quantitative information is needed, and the items to be presented have
a similar substructure, then a Tabular Set
may work well (and it can be creatively combined with other kinds of views,
such as an outline). Or use Chart or
Graph to give a visual representation to a "flat" data set, especially
when a strong qualitative sense of the data is needed.
Notes: When a great deal of information is well-organized and presented in a visually reasonable fashion, the human mind is amazingly good at viewing it all, finding specific pieces of information in it, and getting the big picture out of it. Try to take advantage of human cognitive skills to enhance the data display.
It's easy to confuse "too much clutter" with "too much information" -- it's likely that most cases of the latter are actually misunderstood cases of the former. If a user complains to you that "There's too much stuff to see at once," see if the problem isn't really that it's just badly presented: too many boxes (imagine a 50x10 grid of white edit boxes on a gray background!), too many or too few colors, a hard-to-read font, poor use of negative space or widgetry, etc.
For good discussions of these issues, see Edward Tufte's books, particularly
The Visual Display of Quantitative Information and Envisioning
Information. Ben Shneiderman's latest edition of Designing
the User Interface has an excellent chapter on information visualization,
with plentiful examples from the software world.
Copyright (c) 1999 by Jenifer Tidwell. All rights reserved.