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Summary
C.A. Blok Comparison of the ejfectiveness of dynamic
visualisation variables in view-only and interactive animations:
aspects to be investigated in user tests
Keywords: cartographic animation, use of dynamic variables,
interaction, theory
Dynamic visualisation variables supply dynamics to an animation
ofgeodata. This occurs in the temporal dimension that is added to
the spatial ones in an animated represention.
In this article four dynamic variables are defined: moment of
display, order, duration and frequency. Rate of change and
Synchronisation, also mentioned in earlier research, are not
considered to be variables, but effects of the underlying data or of
interaction with other dynamic variables. The four remaining
variables are not independent of each other, they exhibit
hierarchical relationships. Possibilities to use them and effects of
their use are described within the context of a broader
investigation into application of the dynamic visualisation
variables for the exploration ofgeodata by domain specialists who
are involved in the monitoring of spatial change.
The next step is to test the ways in which the specialists use the
variables for the execution of their monitoring tasks. Differently
designed animations will be used during the tests: chronological
and non-chronological representations, with and without
interaction possibilities. The ultimate goal is to contribute to the
improvement of dynamic visualisation methods and tools.
R esume
C.A. Blok Variables de visualisation dynamiques et leur emploi
pour tester les changements dans l'espace et le temps
Mots-cles: animation cartographique, utilisation des variables
de visualisation, interaction, theorie
Ces variables dynamiques introduisent l'animation des donnees
geographiques en ajoutant une dimension temporelle h la
dimension spatiale. L 'article en definit quatre: moment de
presentation, ordre (suite), duree et frequence.
Par contre taux de changement et Synchronisation, consideres
auparavant comme variables, ne sont que des effets des donnees
sous-jacentes ou de l'interaction entre autres variables susmen-
tionnees ne pas independantes, car il existe des relations
hierarchiques entre elles.
Les possibilites de leur utilisation et les effets de celle-ci sont
analysh dans le cadre d'une recherche plus vaste concernant
l'exploration des donnees geographiques par des specialistes des
changements spatiaux.
Ensuite, il s'agit d'analyse les methodes qu'ils utilisent dans leurs
tests d'animation sous differentes formes: representation
chronologiques ou non-chronologiques, avec ou sans possibilites
d'interaction.
L 'objectiffinal est de contribuer a l'amelioration des methodes de
visualisation dynamiques et des outils de leur mise en oeuvre.
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