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XEROX
BUS[NESS SYSTEMS
Systems Development Division
June 13, 1978
To: ADUPG, Harslem, Clark
XEROX aDD ARCHIVES
I have read and underatoo~
Pages_________To _________
From: Dave Smith / SD at Palo Alto
Reviewer Da te_____
Subject: Graphical bar chart examples
# of Pagea,_-,Ref .; 7J'..s.])J) - /fS'
This is a reference note intended to provide some information that may be of interest to us as we
develop Star 2 and beyond.
Attached are some examples from Bill Bowman's book Graphic Communication that deal with bar
charts. They suggest the great deal of richness that exists in the bar chart domain alone. As we
have found throughout Star, each domain has more depth than is first apparent. We haven't
really addressed this richness in the Star data-driven symbols yet, but it is something we should
be aware of as we consider Star 2.
The point here is not "this is what we are going to do in Star" but rather "here are some of the
ways that people use bar charts to express information." Some of the ways, such as
"comparative" and "compound", our current bar chart maker can handle. Some, such as
"divided", it clearly should be extended to handle eventually. Some, such as "interrupted" and
"composite", it may never handle.
2
QUANTITY
Quantity concerns the amount of a
subject in terms of a fixed scale of
000
COMPARATIVE
measure. In the graphic figure, quan-
tity can be shown in comparative rela