1. Institute for Visualization and Perception Research 1 4/27/99 Dimensional Anchors: A Graphic Primitive for Multidimensional Multivariate Information Visualizations Patrick Hoffman Georges Grinstein UMass-Lowell

2. Institute for Visualization and Perception Research 2 4/27/99 Background Parallel Coordinates Survey Plot Scatter Plot (Scatter Plot Matrix) Radviz (spring forces) Circle Segments

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7. Institute for Visualization and Perception Research 7 4/27/99 Basic level, a DA is an Axis in a ScatterPlot Associated with a Data Column (Dataset) Anchorpoints (data points along the Axis)

8. Institute for Visualization and Perception Research 8 4/27/99 Currently 9 Geometrical Parameters for a DA P1- Size of scatterplot point P2 - Length of perpendicular lines extending from anchorpoints,creating scatterplot points P3 - length of lines connecting points associated with the same data point in scatter plot P4 - length of rectangle in Survey Plot (has a threshold feature) P5 - length of Parallel Coordinate lines P6 - blocking factor for Parallel Coordinate lines P7 - size of Radviz/spring plot point P8 - length of “spring” lines extending from anchorpoints creating Radviz/spring plot point P9 - zoom factor for the “spring” K constant

9. Institute for Visualization and Perception Research 9 4/27/99 Currently 4 Data/Color Parameters for a DA An associated data column for anchorpoints An associated data column for colorizing An associated data column for sorting (Survey Plot parameter only) An associated color palette value (different color tables)

10. Institute for Visualization and Perception Research 10 4/27/99 Some DA-Scatterplot Examples

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13. Institute for Visualization and Perception Research 13 4/27/99 DAs do not currently use Oblique Coordinates

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20. Institute for Visualization and Perception Research 20 4/27/99 Currently 9 Parameters For a Dimensional Anchor P1- Size of scatterplot point P2 - Length of perpendicular lines extending from anchorpoints,creating scatterplot points P3 - length of lines connecting points associated with the same data point in scatter plot P4 - length of rectangle in Survey Plot (has a threshold feature) P5 – length of Parallel Coordinate lines P6 – blocking factor for Parallel Coordinate lines P7 – size of Radviz/spring plot point P8 – length of “spring” lines extending from anchorpoints creating Radviz/spring plot point P9 – zoom factor for the “spring” K constant

21. Institute for Visualization and Perception Research 21 4/27/99 Some DA-Survey plot Examples Data is sorted by some column

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28. Institute for Visualization and Perception Research 28 4/27/99 Currently 9 Parameters For a Dimensional Anchor P1- Size of scatterplot point P2 - Length of perpendicular lines extending from anchorpoints,creating scatterplot points P3 - length of lines connecting points associated with the same data point in scatter plot P4 - length of rectangle in Survey Plot (has a threshold feature) P5 – length of Parallel Coordinate lines P6 – blocking factor for Parallel Coordinate lines P7 – size of Radviz/spring plot point P8 – length of “spring” lines extending from anchorpoints creating Radviz/spring plot point P9 – zoom factor for the “spring” K constant

29. Institute for Visualization and Perception Research 29 4/27/99 Some DA-Parallel Coordinate Examples

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34. Institute for Visualization and Perception Research 34 4/27/99 Currently 9 Parameters For a Dimensional Anchor P1- Size of scatterplot point P2 - Length of perpendicular lines extending from anchorpoints,creating scatterplot points P3 - length of lines connecting points associated with the same data point in scatter plot P4 - length of rectangle in Survey Plot (has a threshold feature) P5 – length of Parallel Coordinate lines P6 – blocking factor for Parallel Coordinate lines P7 – size of Radviz/spring plot point P8 – length of “spring” lines extending from anchorpoints creating Radviz/spring plot point P9 – zoom factor for the “spring” K constant

35. Institute for Visualization and Perception Research 35 4/27/99 Some DA - Radviz/Spring Examples

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45. Institute for Visualization and Perception Research 45 4/27/99 There are many possible configurations (useful) of Dimensional Anchors

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53. Institute for Visualization and Perception Research 53 4/27/99 Some new and potentially useful visualizations generated from Dimensional Anchors Mesh Plots X- Radviz Spring Ordering Visualizations CCCViz More to come

54. Institute for Visualization and Perception Research 54 4/27/99 A Dimensional Anchor Visualization Grand Tour

55. Institute for Visualization and Perception Research 55 4/27/99 Automobile Dataset

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58. Institute for Visualization and Perception Research 58 4/27/99 Iris Flower Data

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61. Institute for Visualization and Perception Research 61 4/27/99 Simple Seven Dataset

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63. Institute for Visualization and Perception Research 63 4/27/99 E-Radviz still has overlap Consider the three points in 4 dimensions d1 d2 d3 d4 1 1 2 2 3 3

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