UCGIS Virtual Seminar - Fall 1998
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 Discussion Guidelines for Geographic Representation  [Edit*][Delete*]

[Image] Discussion Guidelines                       E. Lynn Usery  09/28/98
[Image] Reference List now available                Dawn Wright    09/28/98
[Image] Clarification of visualization vs           E. Lynn Usery  10/07/98
representation
[Image] [Image] Clarification                       Dawn Wright    10/07/98

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Date: September 28, 1998 08:28 AM
Author: E. Lynn Usery (usery@uga.edu)
Subject: Discussion Guidelines

Dawn has created three beginning threads based on the main sections of the
revised White Paper. I request we use these threads to organize our
discussion and contribute to refinement of the research priority. We should
begin with the background information and progress to the basic research
questions and the UCGIS Approach. I have provided subheadings under each of
the main threads to help guide the discussion. I have also provided a set of
extended references beginning with the White Paper and its own reference
set.

Please read the White Paper and review appropriate references before
posting. I think you should find at least one reference for each of the
subtopics under all three threads. I also ask that you help me extend the
reference list by providing citations to articles which are relevant to the
Geographic Representation research priority. Your references may be appended
to the end the existing reference list.

(http://forums.library.orst.edu/forums/Index.cfm?CFApp=7&Message_ID=1570)
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Date: September 28, 1998 01:08 PM
Author: Dawn Wright (dawn@dusk.geo.orst.edu)
Subject: Reference List now available

Please go to

http://dusk.geo.orst.edu/virtual/rep_refs.html

for a list of references that Lynn mentioned for this discussion

The list is also attached below.

Attachments: rep_refs.html

(http://forums.library.orst.edu/forums/Index.cfm?CFApp=7&Message_ID=1571)
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Date: October 07, 1998 12:21 PM
Author: E. Lynn Usery (usery@uga.edu)
Subject: Clarification of visualization vs representation

Discussion has surfaced a confusion between the ideas of visualization and
representation. To help clarify the distinction, traditional maps provided a
single mechanism for representation and display (visualization), the map
itself. With digital techniques, such as GIS, we separate the storage and
representation (raster, vector, database, etc.) from the actual display
(visualization). In fact, we can generate many visualizations from a single
representation in GIS. In the challenge to students to watch a local weather
forecast, I asked participants to separate the representation from the
visualization, to discuss alternate visualizations from the existing
representation and to suggest alternative representations which may provide
better visualizations.

In the second challenge in "research questions", I asked students to examine
a map (both a representation and a visualization), critique it, and offer
alternative representations which can support better visualizations. One of
the deficiencies I see in the National Geographic map of Population and
Resources is that it is a static visualization with a fixed data
representation attempting to represent dynamic phenomena (fires, growth,
etc.)

Does this help distinguish the concepts of representation and visualization?

(http://forums.library.orst.edu/forums/Index.cfm?CFApp=7&Message_ID=1777)

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     Date: October 07, 1998 08:12 PM
     Author: Dawn Wright (dawn@dusk.geo.orst.edu)
     Subject: Clarification

     > better visualizations. One of the deficiencies I
     > see in the National Geographic map of Population
     > and Resources is that it is a static
     > visualization with a fixed data representation
     > attempting to represent dynamic phenomena (fires,
     > growth, etc.)
     >
     > Does this help distinguish the
     > concepts of representation and visualization?

     Thanks for this very helpful clarification Lynn, which I will bring up
     in my face-to-face session with my students.

     Another deficiency in the National Geographic map is that it draws
     heavily on data provided by a UC-Santa Barbara grad student, Paul
     Sutton, but does not credit Paul anywhere, at least that I can see, in
     the map or the article! (grrrr!)

     (http://forums.library.orst.edu/forums/Index.cfm?CFApp=7&Message_ID=1790)