Difference between revisions of "Linking and Brushing"

From InfoVis:Wiki
Jump to navigation Jump to search
Line 3: Line 3:
 
[[Image:Linkingbrushing.jpg|250px|thumb|Linking and brushing]]
 
[[Image:Linkingbrushing.jpg|250px|thumb|Linking and brushing]]
  
{{Quotation|[...] die Verbindung zwischen den einzelnen Visualisierung auch innerhalb der Visuaisierung darzustellen. Dazu können so genannte Linking und Brushing Techniken verwendet werden, die es dem Benutzer erlauben, interaktiv einen Teil der Visualisierung zu markieren. Die ausgewählten Daten werden dann auch in den anderen Visualisierungen entsprechend markiert. Dadurch können zum Beispiel höher-dimensionale Strukturen mit Hilfe mehrerer zwei-dimensionaler Visualisierungen dargestellt werden.|[Saake et al.]}}
+
{{Quotation|By linking, we mean showing how a point, or set of points, behaves
 +
in each of the plots. This is accomplished by highlighting these points
 +
in some fashion. For example, the highlighted points could be drawn
 +
as a filled circle while the remaining points could be drawn as unfilled
 +
circles. A typical application of this would be to show how an outlier
 +
shows up in each of the individual pairwise plots. Brushing extends
 +
this concept a bit further. In brushing, the points to be highlighted
 +
are interactively selected by a mouse and the scatterplot matrix is
 +
dynamically updated (ideally in real time). That is, we can select a
 +
rectangular region of points in one plot and see how those points are
 +
reflected in the other plots.|[NIST/SEMATECH, 2004]}}
  
 
Brushing means interactively selecting a subset of the data items with an input device. This is usually done to highlight this subset, to delete it from the view or to de-emphasize it, if the user wants to focus on the other items.
 
Brushing means interactively selecting a subset of the data items with an input device. This is usually done to highlight this subset, to delete it from the view or to de-emphasize it, if the user wants to focus on the other items.
Line 14: Line 24:
 
*[Voigt, 2004]: R. Voigt, [http://www.vrvis.at/vis/resources/DA-RVoigt/node10.html ''Linking and brushing''], 2004.
 
*[Voigt, 2004]: R. Voigt, [http://www.vrvis.at/vis/resources/DA-RVoigt/node10.html ''Linking and brushing''], 2004.
 
*[Saake et al., 2000]: Gunter Saake, Kai-Uwe Sattler, Daniel Keim, ''Datenbank- und Visualisierungstechnologie in der Informationsfusion'', Fakultät für Informatik, Universität Magdeburg, 2000.
 
*[Saake et al., 2000]: Gunter Saake, Kai-Uwe Sattler, Daniel Keim, ''Datenbank- und Visualisierungstechnologie in der Informationsfusion'', Fakultät für Informatik, Universität Magdeburg, 2000.
 
+
*[NIST/SEMATECH, 2004]: NIST/SEMATECH ''e-handbook of statistical methods'', 2004.
  
 
[[Category: Glossary]]
 
[[Category: Glossary]]

Revision as of 11:16, 23 June 2005

The idea of linking and brushing is to combine different visualization methods to overcome the shortcomings of single techniques. Interactive changes made in one visualization are automatically reflected in the other visualizations. Note that connecting multiple visualizations through interactive linking and brushing provides more information than considering the component visualizations independently. [Keim, 2004]
File:Linkingbrushing.jpg
Linking and brushing
By linking, we mean showing how a point, or set of points, behaves

in each of the plots. This is accomplished by highlighting these points in some fashion. For example, the highlighted points could be drawn as a filled circle while the remaining points could be drawn as unfilled circles. A typical application of this would be to show how an outlier shows up in each of the individual pairwise plots. Brushing extends this concept a bit further. In brushing, the points to be highlighted are interactively selected by a mouse and the scatterplot matrix is dynamically updated (ideally in real time). That is, we can select a rectangular region of points in one plot and see how those points are

reflected in the other plots.
[NIST/SEMATECH, 2004]


Brushing means interactively selecting a subset of the data items with an input device. This is usually done to highlight this subset, to delete it from the view or to de-emphasize it, if the user wants to focus on the other items.

Brushing is most useful in connection with linking. For instance when working on a scatterplot matrix, the user could brush some points in one plot. This causes the brushing–effect to be applied to the corresponding points in other plots.

References

  • [Keim, 2004]: D. A. Keim, Information Visualization and Visual Data Mining, IEEE Transactions on Visualization and computer graphics, 2002.
  • [Voigt, 2004]: R. Voigt, Linking and brushing, 2004.
  • [Saake et al., 2000]: Gunter Saake, Kai-Uwe Sattler, Daniel Keim, Datenbank- und Visualisierungstechnologie in der Informationsfusion, Fakultät für Informatik, Universität Magdeburg, 2000.
  • [NIST/SEMATECH, 2004]: NIST/SEMATECH e-handbook of statistical methods, 2004.