TraVis - A visualization framework for mobile transect data sets in an urban microclimate context

Kathrin Hab, Ariane Middel, Benjamin L. Ruddell, Hans Hagen

Research output: Chapter in Book/Report/Conference proceedingConference contribution

9 Scopus citations


In urban microclimate research, mobile transects are utilized to observe the relationship between atmospheric variables and the urban environment. However, the data sets resulting from mobile measurements are complex: They are spatially dependent, multivariate, and often-times multitemporal. At the same time, the spatial context of each observation - its field of view and area represented - is physically complex and dynamic. These properties make analysis and visualization challenging. We present a prototype visualization framework that assists researchers in the analysis of mobile transect measurements. The system enables users to visualize and explore observations as walls that delineate the transect route on a map. The observed attributes are stacked upon each other within these walls as ribbons to facilitate the qualitative analysis of spatial variability and multivariate correlations. The relationship between observations and spatial context can interactively be explored by moving a slider along the transect route. For each observation on the track, the spatially contextual source area is displayed and linked to a view of the fraction of land cover classes contained within the source area. These qualitative analysis capabilities are complemented by an interactive clustering interface, which allows for the classification of transect segments according to a coherent pattern of multivariate relationships between a user-defined set of observations. The framework was developed by a team comprising both visualization and urban microclimate researchers, and a case study shows its utility for this specialized application.

Original languageEnglish (US)
Title of host publication2015 IEEE Pacific Visualization Symposium, PacificVis 2015 - Proceedings
EditorsShixia Liu, Gerik Scheuermann, Shigeo Takahashi
PublisherIEEE Computer Society
Number of pages8
ISBN (Electronic)9781467368797
StatePublished - Jul 14 2015
Externally publishedYes
Event2015 8th IEEE Pacific Visualization Symposium, PacificVis 2015 - Hangzhou, China
Duration: Apr 14 2015Apr 17 2015

Publication series

NameIEEE Pacific Visualization Symposium
ISSN (Print)2165-8765
ISSN (Electronic)2165-8773


Conference2015 8th IEEE Pacific Visualization Symposium, PacificVis 2015


  • I.3.8 [Computer Graphics]: Applications -
  • J.2 [Computer Applications]: Earth and atmospheric sciences -

ASJC Scopus subject areas

  • Computer Graphics and Computer-Aided Design
  • Computer Vision and Pattern Recognition
  • Hardware and Architecture
  • Software


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