Teaching:TUW - UE InfoVis WS 2010/11 - Gruppe 05 - Aufgabe 2: Difference between revisions
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pixels. The result of this often is over-plotting, clutter or other things. | pixels. The result of this often is over-plotting, clutter or other things. | ||
Most of the time this structures are avoided. But sometimes this artifacts can be useful, because they might point out interesting structures in the data. | Most of the time this structures are avoided. But sometimes this artifacts can be useful, because they might point out interesting structures in the data. | ||
Until know not a lot of attention is paid to the way visualzation is presented on the screen. | |||
For the case of parallel coordinates so called Pargnostics (Parallel coordinates diagnostics) should act as a bridge between the created visualization and the perceptual system of the user. | |||
Based on metrics it's possible to provide a optimization which maximize or minimize certain visual artifacts. | |||
== Metrics == | == Metrics == | ||
Revision as of 23:04, 16 November 2010
Pargnostics: Screen-Space Metrics for Parallel Coordinates
Introduction
Visualization still takes place in a space with a limited number of discrete pixels. The result of this often is over-plotting, clutter or other things. Most of the time this structures are avoided. But sometimes this artifacts can be useful, because they might point out interesting structures in the data. Until know not a lot of attention is paid to the way visualzation is presented on the screen. For the case of parallel coordinates so called Pargnostics (Parallel coordinates diagnostics) should act as a bridge between the created visualization and the perceptual system of the user. Based on metrics it's possible to provide a optimization which maximize or minimize certain visual artifacts.
Metrics
Pixel-Space Histograms
- One-Dimensional Axis Histogram
- One-Dimensional Distance Histogram
- Two-Dimensional Axis Pair Histogram
Metrics ...
- Number of Line Crossings
- Angles of Crossing
- Parallelism
- Mutual Information
- Convergence, Divergence
- Over-plotting
- Pixel-based Entropy
Dimension Order Optimization
Conclusion
References
[Dasgupta and Kosara, 2010] Aritra Dasgupta and Robert Kosara. Pargnostics: Screen-Space Metrics for Parallel Coordinates. IEEE Transactions on Visualization and Computer Graphics, 16(6):1017-1026, November/December 2010