Computer Graphics
TU Braunschweig

Orientation-enhanced parallel coordinate plots (OPCPs)


Orientation-enhanced parallel coordinate plots (OPCPs)

Parallel Coordinate Plots (PCPs) is one of the most powerful techniques for the visualization of multivariate data. However, for large datasets, the representation suffers from clutter due to overplotting. In this case, discerning the underlying data information and selecting specific interesting patterns can become difficult. We propose a new and simple technique to improve the display of PCPs by emphasizing the underlying data structure. Our Orientation-enhanced Parallel Coordinate Plots (OPCPs) improve pattern and outlier discernibility by visually enhancing parts of each PCP polyline with respect to its slope. This enhancement also allows us to introduce a novel and efficient selection method, the Orientation-enhanced Brushing (O-Brushing). Our solution is particularly useful when multiple patterns are present or when the view on certain patterns is obstructed by noise. We present the results of our approach with several synthetic and real-world datasets. Finally, we conducted a user evaluation, which verifies the advantages of the OPCPs in terms of discernibility of information in complex data. It also confirms that O-Brushing eases the selection of data patterns in PCPs and reduces the amount of necessary user interactions compared to state-of-the-art brushing techniques.


Author(s):Renata Georgia Raidou, Martin Eisemann, Marcel Breeuwer, Anna Vilanova Bartroli
Published:August 2015
Type:Article
Journal:IEEE Transactions on Visualization and Computer Graphics (TVCG, Proc. Visualization / InfoVis) Vol. 22
DOI:10.1109/TVCG.2015.2467872
Presented at:IEEE Visualization 2015


@article{raidou2020orientation-enhanced,
  title = {Orientation-enhanced parallel coordinate plots ({OPCP}s) },
  author = {Raidou, Renata Georgia and Eisemann, Martin and Breeuwer, Marcel and Vilanova Bartroli, Anna},
  journal = {{IEEE} Transactions on Visualization and Computer Graphics ({TVCG}, Proc. Visualization / InfoVis)},
  doi = {10.1109/{TVCG}.2015.2467872},
  volume = {22},
  number = {1},
  pages = {589--598},
  month = {Aug},
  year = {2015}
}

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