Depth cues and density in temporal parallel coordinates

Authors:
Jimmy Johansson;Patric Ljung;Matthew Cooper
Affiliations:
Norrköping Visualization and Interaction Studio, Linköping University, Sweden;Norrköping Visualization and Interaction Studio, Linköping University, Sweden;Norrköping Visualization and Interaction Studio, Linköping University, Sweden
Venue:
EUROVIS'07 Proceedings of the 9th Joint Eurographics / IEEE VGTC conference on Visualization
Year:
2007

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Abstract

This paper introduces Temporal Density Parallel Coordinates (TDPC) and Depth Cue Parallel Coordinates (DCPC) which extend the standard 2D parallel coordinates technique to capture time-varying dynamics. The proposed techniques can be used to analyse temporal positions of data items as well as temporal positions of changes occurring using 2D displays. To represent temporal changes, polygons (instead of traditional lines) are rendered in parallel coordinates. The results presented show that rendering polygons is superior at revealing large temporal changes. Both TDPC and DCPC have been efficiently implemented on the GPU allowing the visualization of thousands of data items over thousands of time steps at interactive frame rates.