Generalisation and Multiple Representation

Trajectories and line generalisation

6204.1 - A three-steps aggregation method for mobility data analysis and visualization

Thursday, July 6
10:30 AM - 10:50 AM
Location: Virginia B

Daily mobility data are usually multidimensional and disaggregated. These characteristics make them hard to manipulate, to analyze and to map. In GISciences methods of representation have been proposed, but none of them seems currently really able to efficiently bring out geographical knowledge without filtering or aggregating. To avoid this problem, we propose an innovative methodology to handle and visualize disaggregated mobility data based on three-steps aggregation: data characteristics, type of aggregation and level of aggregation. At each step, research assumptions about mobility aggregation and visualization are translated into parameters leading to different mapped results. In this communication, different sets of parameters are tested and resulting maps are analyzed and compared using local and global indicators. Some of these maps offer relevant representations of mobility data and sometimes seem able to reveal spatial structures that are non visible at first sight.

Emilie Lerond

PhD Student
laboratoire ThéMA

Emilie Lerond is a PhD student in geography and planning under the supervision of Jean-Philippe Antoni in the 'Mobility, Cities and Transport' team of ThéMA laboratory (UMR 6049) in Dijon, France. She works on ' A geovisualization approach for evaluating land-use and mobility'. Her works focus on land-use and transport interactions and on visualization of massive data in spatial and temporal ways.

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Olivier Klein

LISER

Olivier Klein is head of department urban development and mobility in LISER (Luxembourg Institute of Socio-Economic Research).

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Jean-Philippe Antoni

Laboratoire ThéMA

Jean-Philippe Antoni is a lecturer in regional and town planning at the University of Franche-Comté. His main research is into the study and characterization of urban areas in terms of their shape and the commuting patterns they engender, interactions among which are modelled as part of the MobiSim project (disaggregated LUTI model) that he directs.

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Dirk Burghardt

Prof. Dipl.-Phys. Dr.-Ing. habil.
TU Dresden, Institut of Cartography

Dirk Burghardt is a full professor in the Cartographic Institute at Dresden University of Technology since 2009. From 1998-2001 he worked as a software engineer and product manager in a map production company in Switzerland. Between 2002 and 2008 he was lecturer in the GIS Division at the University of Zurich (CH). Prof. Burghardt is the chair of the ICA Commission on Generalisation and Multiple Representation of the International Cartographic Association since 2011. His main research interests include automated generalisation and map production, geographic information retrieval, interactive cartographic presentations, geovisual analytics and cartographic communication.

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