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authors Hnat, B. and Chapman, S.C.
year 2000
title Visualisation of multiscale datasets in numerical models of complex systems
source CIDAC, Volume 2 Issue 4 November 2000, pp. 236-241
summary Recently advanced visualisation techniques receive increasing attention among scientists and engineers. These techniques should not only allow a direct analysis of multidimensional structures to provide intiutive and quick comparison of experimental data with model results, but also yield quantitative measures to support or negate the model itself. A key phenomenology of complex systems is that they are multiscale, i.e. the structures of interest in the data are on the wide range of spatiotemporal scale. Here we examine a simple, yet generic, example, a sandpile (avalance model), the threshold coupled map lattice (CML). The emergent phenomenology is broadband, but is represented on a (finite) grid. To study the 3-dimensional evolution of the threshold CML model of a sandpile as a function of control parameters, a semi-immersive virtual reality (VR) environment has been used. Sandpile profiles are calculated in real time and are superimposed over the colour grid respresenting one of the control parameters. This represents a generic problem of visualising multiscale structures in datasets derived from non-linear systems. The software models were developed in OpenGL and Glut library and will ultimately be implemented in semi-immersive VR on ImmersaDesk. To achieve sufficient speed in real-time display and to ultimately facilitate computational steering, the full data set must be represented geographically in a compact form without loss of information.
keywords Semi-Immersive Virtual Reality, 3-Dimensional Visualisation, OpenGL, CML
series journal paper
references Content-type: text/plain
last changed 2003/05/15 19:23
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