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- If, while maintaining the reference axis
- invariable, we film a collection of minimally
- dissimilar graphs, each one of which represents a
- moment in time of the distribution of a
- characteristic in the spatial sample, and if we
- present them for viewing at the rate of 24 images
- per second, the result will be the continuous
- movement of volume if, as in the present case,
- the type of representation selected is one of
- visualized block diagrams in isometric
- perspective. The successive configurations of
- this volume manifest, with a qualitatively
- different expressive force, the basic outline of
- a particular process of space-time evolution
- {p.478}
-
- Displays allow the enormous amount of raw data
- that a numerical experiment produces within the
- central processing unit of the computer to be
- communicated to the researcher in the form that
- the human visual system and brain are best
- adapted to appreciate. {p.29)
-
- In the GIS environment, visualisation techniques
- are recognised as an invaluable system component,
- aiding in the interpretation of spatially related
- phenomena and complex data analysis that takes
- the GIS a step beyond two dimensional polygonal
- overlay analyses. Many of the GIS venders are
- including this capability in their systems to
- help cope in our understanding of the "fire hose"
- of data being produced by contemporary sources
- such as satellites. {p.737}
-
- The point that must be made from all these
- legitimate variations of the area-value cartogram
- is that visual impression has a great deal to do
- with the success of the final result. There is a
- basic principle involved: from the very first
- moment that one grasps the idea that space on a
- map represents real space on the ground, that
- concept becomes a tenacious mental construct. We
- "recognise" mapped areas, read past the
- distortions and visual unrealities of map
- projections as if they were not there, seeing the
- real world in the inked lines, totally accepting
- that one stands for the other. The mind is good
- at recognising whole shapes from their parts, and
- real identities from abstractions or distortions.
- We do it all the time, it is called recognition
- of symbols: and this is why map-like cartograms
- work so well. One "recognises" the mapped areas;
- albeit falsely because of this "recognition"
- facility one can read good cartograms with ease,
- identifying geographic locations, and
- acknowledging the overlay (in terms of size) or a
- completely unrelated set of information. Walk
- your mind through an atlas of cartogram "world
- maps" some time and watch the "real" world and
- its parts expand and diminish in topological
- response to wheat prices, barrels of oil,
- stockpiles of missiles, food surpluses,
- population concentrations. {p.7}
-
- A personal computer with an appropriate display
- system can be just about as effective as a larger
- system for our visualization techniques and
- interactive when outfitted with a suitable
- computation accelerator, such as the one we
- described. {p.29}
-
- The scientific visualization going on today,
- Rosebush shows us, has been going on for a long
- time. In 1964 Ed Zajak of Bell Labs, who was a
- programmer animator, did a satellite orbiting in
- space... {p.9}
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