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eSTIMe : une approche visuelle, interactive et modulable pour l’analyse multi-points de vue des mobilités quotidiennes

Abstract : Daily mobility data describing individual trips over 24 hours are valuable sources of information to analyse territories dynamics and people’s lifestyles over space and time. Experts from various fields within urban policies need to manipulate these data to extract and exploit synthetic knowledge. This paper describes a geovisualisation approach, eSTIMe, to explore daily mobility data via three complementary issues (i.e. travel flows, presence dynamics, and daily trajectories) over different spatio-temporal granularity levels and thematic attributes. The eSTIMe approach is supported by a four-step workflow: (1) data modeling, (2) mobility indicators derivation, (3) querying, and (4) visualization. The visualization environment comprises multiple displays embedded with customizable dashboards to give the user enough flexibility to organize their visualization space in meaningful ways according to the ongoing analysis. Further, the interaction with displays and visualizations leverages tactile and tangible input via a mobile device. We describe two case studies to show the usage of our visual and interactive tools and summarize the outcomes of three user studies. Overall, users appreciated our approach since it allows them to describe the daily mobility phenomenon from various perspectives and over multiple spatio-temporal granularity levels and thematic attributes. Our approach requires multiple screens and a tablet, which may restrict its integration in the everyday work of public agents. However, the users expressed great interest in eSTIMe due to the underlying process to structure different data sets and provide mobility indicators ready to visualize.
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Submitted on : Friday, July 10, 2020 - 11:27:17 AM
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Aline Menin, Sonia Chardonnel, Paule-Annick Davoine, Michael Ortega, Etienne Dublé, et al.. eSTIMe : une approche visuelle, interactive et modulable pour l’analyse multi-points de vue des mobilités quotidiennes. Geomatica, Association canadienne des sciences géomatiques, 2020, ⟨10.1139/geomat-2020-0006⟩. ⟨hal-02895948⟩



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