1. Matthias Mayer The Table Lens - Ramana Rao & Stuart K. Card Information Visualization 838b - February 21st 2001 mayer@cs.umd.edu The Table Lens: Merging Graphical and Symbolic Representations in an Interactive Focus+Context Visualization for Tabular Information Ramana Rao Stuart K. Card (Xerox PARC) ACM CHI 1994

2. Matthias Mayer The Table Lens - Ramana Rao & Stuart K. Card Information Visualization 838b - February 21st 2001 mayer@cs.umd.edu Overview Paper Description Contributions References Critique What has happened to Table Lenses?

3. Matthias Mayer The Table Lens - Ramana Rao & Stuart K. Card Information Visualization 838b - February 21st 2001 mayer@cs.umd.edu Mini Demo

4. Matthias Mayer The Table Lens - Ramana Rao & Stuart K. Card Information Visualization 838b - February 21st 2001 mayer@cs.umd.edu Paper Description Introduction Focus+Context Technique Graphical Map- ping Scheme User Interface Data Analysis Scenarios

5. Matthias Mayer The Table Lens - Ramana Rao & Stuart K. Card Information Visualization 838b - February 21st 2001 mayer@cs.umd.edu Paper Description What are Table Lenses good for? to make Sense of large Tables to effectively analyze large Spreadsheets to solve more Problems on small Screens they use a Focus&Context/ Fisheye Technique Introduction Focus+Context Technique Graphical Map- ping Scheme User Interface Data Analysis Scenarios

6. Matthias Mayer The Table Lens - Ramana Rao & Stuart K. Card Information Visualization 838b - February 21st 2001 mayer@cs.umd.edu Paper Description Design of Table Lenses In the Design they considered Properties of Tables: Regularity of Content -> preserve coherence of rows & columns despite distortions. Rows and Columns are independent ->independent distortion in both directions. ->multiple focal areas possible. Introduction Focus+Context Technique Graphical Map- ping Scheme User Interface Data Analysis Scenarios

7. Matthias Mayer The Table Lens - Ramana Rao & Stuart K. Card Information Visualization 838b - February 21st 2001 mayer@cs.umd.edu Paper Description Design of Table Lenses Introduction Focus+Context Technique Graphical Map- ping Scheme User Interface Data Analysis Scenarios

8. Matthias Mayer The Table Lens - Ramana Rao & Stuart K. Card Information Visualization 838b - February 21st 2001 mayer@cs.umd.edu Paper Description Distortion Framework DOI Function (Degree of Interest - by Furnas) maps from item to value controls space allocation of cells Introduction Focus+Context Technique Graphical Map- ping Scheme User Interface Data Analysis Scenarios

9. Matthias Mayer The Table Lens - Ramana Rao & Stuart K. Card Information Visualization 838b - February 21st 2001 mayer@cs.umd.edu Paper Description Distortion Framework DOI Function (Degree of Interest - by Furnas) maps from item to value controls space allocation of cells Introduction Focus+Context Technique Graphical Map- ping Scheme User Interface Data Analysis Scenarios

10. Matthias Mayer The Table Lens - Ramana Rao & Stuart K. Card Information Visualization 838b - February 21st 2001 mayer@cs.umd.edu Paper Description Distortion Framework DOI Function (Degree of Interest - by Furnas) maps from item to value controls space allocation of cells Introduction Focus+Context Technique Graphical Map- ping Scheme User Interface Data Analysis Scenarios

11. Matthias Mayer The Table Lens - Ramana Rao & Stuart K. Card Information Visualization 838b - February 21st 2001 mayer@cs.umd.edu Paper Description Distortion Framework DOI Function (Degree of Interest - by Furnas) maps from item to value controls space allocation of cells Introduction Focus+Context Technique Graphical Map- ping Scheme User Interface Data Analysis Scenarios

12. Matthias Mayer The Table Lens - Ramana Rao & Stuart K. Card Information Visualization 838b - February 21st 2001 mayer@cs.umd.edu Paper Description Distortion Framework DOI Function (Degree of Interest - by Furnas) maps from item to value controls space allocation of cells Transfer Function: Integral of DOI Introduction Focus+Context Technique Graphical Map- ping Scheme User Interface Data Analysis Scenarios

13. Matthias Mayer The Table Lens - Ramana Rao & Stuart K. Card Information Visualization 838b - February 21st 2001 mayer@cs.umd.edu Paper Description Distortion Framework Compared to sooner approaches: Perspective Wall Document Lens DOI flat topped mountain with sloped regions Introduction Focus+Context Technique Graphical Map- ping Scheme User Interface Data Analysis Scenarios

14. Matthias Mayer The Table Lens - Ramana Rao & Stuart K. Card Information Visualization 838b - February 21st 2001 mayer@cs.umd.edu Paper Description Interactive Manipulation Introduction Focus+Context Technique Graphical Map- ping Scheme User Interface Data Analysis Scenarios

15. Matthias Mayer The Table Lens - Ramana Rao & Stuart K. Card Information Visualization 838b - February 21st 2001 mayer@cs.umd.edu Paper Description Interactive Manipulation 3 basic Manipulations: Introduction Focus+Context Technique Graphical Map- ping Scheme User Interface Data Analysis Scenarios

16. Matthias Mayer The Table Lens - Ramana Rao & Stuart K. Card Information Visualization 838b - February 21st 2001 mayer@cs.umd.edu Paper Description Interactive Manipulation 3 basic Manipulations: Introduction Focus+Context Technique Graphical Map- ping Scheme User Interface Data Analysis Scenarios

17. Matthias Mayer The Table Lens - Ramana Rao & Stuart K. Card Information Visualization 838b - February 21st 2001 mayer@cs.umd.edu Paper Description Interactive Manipulation 3 basic Manipulations: Introduction Focus+Context Technique Graphical Map- ping Scheme User Interface Data Analysis Scenarios

18. Matthias Mayer The Table Lens - Ramana Rao & Stuart K. Card Information Visualization 838b - February 21st 2001 mayer@cs.umd.edu Paper Description Interactive Manipulation 3 basic Manipulations: Introduction Focus+Context Technique Graphical Map- ping Scheme User Interface Data Analysis Scenarios

19. Matthias Mayer The Table Lens - Ramana Rao & Stuart K. Card Information Visualization 838b - February 21st 2001 mayer@cs.umd.edu Paper Description Interactive Manipulation 3 basic Manipulations: Introduction Focus+Context Technique Graphical Map- ping Scheme User Interface Data Analysis Scenarios

20. Matthias Mayer The Table Lens - Ramana Rao & Stuart K. Card Information Visualization 838b - February 21st 2001 mayer@cs.umd.edu Paper Description Interactive Manipulation 3 basic Manipulations: Introduction Focus+Context Technique Graphical Map- ping Scheme User Interface Data Analysis Scenarios

21. Matthias Mayer The Table Lens - Ramana Rao & Stuart K. Card Information Visualization 838b - February 21st 2001 mayer@cs.umd.edu Paper Description Interactive Manipulation 3 basic Manipulations: Introduction Focus+Context Technique Graphical Map- ping Scheme User Interface Data Analysis Scenarios

22. Matthias Mayer The Table Lens - Ramana Rao & Stuart K. Card Information Visualization 838b - February 21st 2001 mayer@cs.umd.edu Paper Description Interactive Manipulation 3 basic Manipulations: Introduction Focus+Context Technique Graphical Map- ping Scheme User Interface Data Analysis Scenarios

23. Matthias Mayer The Table Lens - Ramana Rao & Stuart K. Card Information Visualization 838b - February 21st 2001 mayer@cs.umd.edu Paper Description Different graphical representations of Content Graphical Vocabulary: Text, Color, Shading, Length, Position Determined by 6 Factors: Value Value Type (quantitative vs. categorial) Region Type (focal...) Cell Size User's Choice (e.g. left = 0) Spotlights Introduction Focus+Context Technique Graphical Map- ping Scheme User Interface Data Analysis Scenarios

24. Matthias Mayer The Table Lens - Ramana Rao & Stuart K. Card Information Visualization 838b - February 21st 2001 mayer@cs.umd.edu Paper Description Manipulation of Focus: pointer gestures & control points grasping & dragging different operators on columns: sorting, rearranging, calculating new columns Introduction Focus+Context Technique Graphical Map- ping Scheme User Interface Data Analysis Scenarios

25. Matthias Mayer The Table Lens - Ramana Rao & Stuart K. Card Information Visualization 838b - February 21st 2001 mayer@cs.umd.edu Paper Description See Demo later. Introduction Focus+Context Technique Graphical Map- ping Scheme User Interface Data Analysis Scenarios

26. Matthias Mayer The Table Lens - Ramana Rao & Stuart K. Card Information Visualization 838b - February 21st 2001 mayer@cs.umd.edu My favourite Sentence "The combination of our focus+context technique and graphical mapping scheme, with a small set of interactive operators enables performing exploratory data analysis in a highly interactive and natural manner."

27. Matthias Mayer The Table Lens - Ramana Rao & Stuart K. Card Information Visualization 838b - February 21st 2001 mayer@cs.umd.edu Contributions They applied Focus&Context Technique to tables of data. The technique allows to integrate detailed symbolic data with less detailed graphical representations. Precise description of - specific Focus+Context technique - specific interaction techniques - graphical mapping scheme

28. Matthias Mayer The Table Lens - Ramana Rao & Stuart K. Card Information Visualization 838b - February 21st 2001 mayer@cs.umd.edu 1993 Stretching rubber sheet: (Sarkar, Snibbe, Reiss) Document Lens + 3D Interactive Animation (Robertson, MacKinlay) I I I I I I I I I I I I Notes on References 1982 Bifocal Display (Spence & Apperley) 1986 Fisheye Views (Furnas) 1991 Perspective Wall (MacKinlay, Robertson, Card) 1992 Fisheye Views for Graphs (Sarkar & Brown)

29. Matthias Mayer The Table Lens - Ramana Rao & Stuart K. Card Information Visualization 838b - February 21st 2001 mayer@cs.umd.edu 1993 Stretching rubber sheet: (Sarkar, Snibbe, Reiss) Document Lens + 3D Interactive Animation (Robertson, MacKinlay) I I I I I I I I I I I I Notes on References 1982 Bifocal Display (Spence & Apperley) 1986 Fisheye Views (Furnas) 1991 Perspective Wall (MacKinlay, Robertson, Card) 1992 Fisheye Views for Graphs (Sarkar & Brown)

30. Matthias Mayer The Table Lens - Ramana Rao & Stuart K. Card Information Visualization 838b - February 21st 2001 mayer@cs.umd.edu 1993 Stretching rubber sheet: (Sarkar, Snibbe, Reiss) Document Lens + 3D Interactive Animation (Robertson, MacKinlay) I I I I I I I I I I I I Notes on References 1982 Bifocal Display (Spence & Apperley) 1986 Fisheye Views (Furnas) 1991 Perspective Wall (MacKinlay, Robertson, Card) 1992 Fisheye Views for Graphs (Sarkar & Brown)

31. Matthias Mayer The Table Lens - Ramana Rao & Stuart K. Card Information Visualization 838b - February 21st 2001 mayer@cs.umd.edu 1993 Stretching rubber sheet: (Sarkar, Snibbe, Reiss) Document Lens + 3D Interactive Animation (Robertson, MacKinlay) I I I I I I I I I I I I Notes on References 1982 Bifocal Display (Spence & Apperley) 1986 Fisheye Views (Furnas) 1991 Perspective Wall (MacKinlay, Robertson, Card) 1992 Fisheye Views for Graphs (Sarkar & Brown)

32. Matthias Mayer The Table Lens - Ramana Rao & Stuart K. Card Information Visualization 838b - February 21st 2001 mayer@cs.umd.edu 1993 Stretching rubber sheet: (Sarkar, Snibbe, Reiss) Document Lens + 3D Interactive Animation (Robertson, MacKinlay) I I I I I I I I I I I I Notes on References 1982 Bifocal Display (Spence & Apperley) 1986 Fisheye Views (Furnas) 1991 Perspective Wall (MacKinlay, Robertson, Card) 1992 Fisheye Views for Graphs (Sarkar & Brown)

33. Matthias Mayer The Table Lens - Ramana Rao & Stuart K. Card Information Visualization 838b - February 21st 2001 mayer@cs.umd.edu 1993 Stretching rubber sheet: (Sarkar, Snibbe, Reiss) Document Lens + 3D Interactive Animation (Robertson, MacKinlay) I I I I I I I I I I I I Notes on References 1982 Bifocal Display (Spence & Apperley) 1986 Fisheye Views (Furnas) 1991 Perspective Wall (MacKinlay, Robertson, Card) 1992 Fisheye Views for Graphs (Sarkar & Brown)

34. Matthias Mayer The Table Lens - Ramana Rao & Stuart K. Card Information Visualization 838b - February 21st 2001 mayer@cs.umd.edu 1993 Stretching rubber sheet: (Sarkar, Snibbe, Reiss) Document Lens + 3D Interactive Animation (Robertson, MacKinlay) I I I I I I I I I I I I Notes on References 1982 Bifocal Display (Spence & Apperley) 1986 Fisheye Views (Furnas) 1991 Perspective Wall (MacKinlay, Robertson, Card) 1992 Fisheye Views for Graphs (Sarkar & Brown)

35. Matthias Mayer The Table Lens - Ramana Rao & Stuart K. Card Information Visualization 838b - February 21st 2001 mayer@cs.umd.edu 1993 Stretching rubber sheet: (Sarkar, Snibbe, Reiss) Document Lens + 3D Interactive Animation (Robertson, MacKinlay) I I I I I I I I I I I I Notes on References 1982 Bifocal Display (Spence & Apperley) 1986 Fisheye Views (Furnas) 1991 Perspective Wall (MacKinlay, Robertson, Card) 1992 Fisheye Views for Graphs (Sarkar & Brown)

36. Matthias Mayer The Table Lens - Ramana Rao & Stuart K. Card Information Visualization 838b - February 21st 2001 mayer@cs.umd.edu Critique: Strengths Provide a new technique which seems to be highly usable. Large field of possible application. (Spreadsheets, tabular data). Good structure of paper: F+C / Interaction / Graphical Mapping

37. Matthias Mayer The Table Lens - Ramana Rao & Stuart K. Card Information Visualization 838b - February 21st 2001 mayer@cs.umd.edu Critique: Weaknesses They didn't show limitations of their approach numbers of items possible kinds of analysis Ways of analysis were not formally described. No study was made. Baseball examples are not globally understandable. No Labels on axes.

38. Matthias Mayer The Table Lens - Ramana Rao & Stuart K. Card Information Visualization 838b - February 21st 2001 mayer@cs.umd.edu What has happened to this topic? TableLens was sold by InXight, a Xerox Spinoff Company. Now Eureka 1.1. txt+csv+xls - import database queries grouping filtering web-export 30 days trial: www.inxight.com