Visualization software for multivariate data

Visualization software for multivariate data

Post by Henry Greensi » Fri, 11 Aug 1995 04:00:00

In a research effort to understand a large database of
electroencephalogram (EEG) data, my collaborators and I
are running up against a wall in finding easy ways to
visualize this multivariate data. For each of many
patients, we have spatiotemp*data consisting of
time series associated with 21 spatial electrodes,
i.e., a 21xN data matrix where N may be as large as
20,000. The database covers about 100 patients.

We would like to try things like examine the 19 time
series simultaneously for a given patient, compare time
series across patients, make animations of the
spatiotemp*data as spatial maps, and interrogate
the data in real time (e.g., dynamically change scales
or color maps). It would also be a big plus to be able
produce publication-quality output, e.g., Postscript

If anyone has tried this kind of data analysis before,
have they found any useful visualization software?




1. Algo for 1D multivariate data visualization


I am a new comer to visualization area.  Currently I am
trying to visualize some data of a ecosystem.  The data is
one dimentional with multiple variables in each data point.
I try to find a good algo to do this but almost run out
of time.  Are there any good reference? papers, good
application examples, web sites...whatever

Currently I am consider using VTK2.1 (Visualization Toolkit)
to implement all these stuff.


Zhaohui Zhong
Department of Computing Science
University of Alberta
Tel: 492-5444 (O)

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