Visualisation offers a means to combine and view several channels (attributes) of data concurrently.
Communication and Visualisation Terminals
Mobile communication equipment (GSM/GPRS/UMTS), a range of terminals including Personal Digital Assistants (PDA), Palmtops and powerful mobile PCs, ...
This can result in poor quality output for lower resolution devices (although techniques such as anti-aliasing may help mitigate this), but provides a fixed layout, allowing easy user visualisation. This is the method used by Adobe Acrobat.
A DEM normally consists of a regular matrix of elevation values, from which altitude functions such as slope and aspect can be calculated, and which may be rendered for visualisation as isolines (contours), perspective or panoramic views, etc.
Because of the 32bit limits of OpenGL which is used by VTK, visualisation errors may occure if the grass region contains coordinates greater than 1.000.000 and vector coordinates with 0.01 - 0.001 meters precisison.
DA Data Acquisition
DM Data Management
GA Geographical Analysis
DV Data Visualisation
DB Design and Build
HI Human Issues ...
Voxels are frequently used in the visualisation and analysis of medical and scientific data. Some true 3D displays use voxels to describe their resolution. For example, a display might be able to show 512Ã-512Ã-512 voxels.
It will be possible, against the backdrop of a 3-D visualisation of the countryside, to watch the progress of each rider through all the stages of the Tour.
These capabilities of GIS have given rise to new fields such as exploratory cartography and scientific visualisation. Visual presentation is one of the most fascinating aspects of GIS for communicating the results of analysis to policy makers.
A full 3D rendered visualisation of the building and services can be displayed at any time. Services systems drawings can be automatically saved in AutoCAD or exported as DXF files.
 See also: Information, Model, GIS, Geographic, Analysis
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