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Dimensional Anchors:

Dimensional Anchors: A Graphic Primitive for Multidimensional Multivariate Information Visualizations. Patrick Hoffman Georges Grinstein UMass-Lowell. Background. Parallel Coordinates Survey Plot Scatter Plot (Scatter Plot Matrix) Radviz (spring forces) Circle Segments.

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Dimensional Anchors:

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  1. Dimensional Anchors: A Graphic Primitive for Multidimensional Multivariate Information Visualizations Patrick Hoffman Georges Grinstein UMass-Lowell

  2. Background • Parallel Coordinates • Survey Plot • Scatter Plot (Scatter Plot Matrix) • Radviz (spring forces) • Circle Segments

  3. Basic level, a DA is an Axis in a ScatterPlot • Associated with a Data Column (Dataset) • Anchorpoints (data points along the Axis)

  4. 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

  5. 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)

  6. Some DA-Scatterplot Examples

  7. DAs do not currently use Oblique Coordinates

  8. 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

  9. Some DA-Survey plot Examples Data is sorted by some column

  10. 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

  11. Some DA-Parallel Coordinate Examples

  12. 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

  13. Some DA - Radviz/Spring Examples

  14. There are many possible configurations (useful) of Dimensional Anchors

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