A Declarative Rendering Model for Multiclass Density Maps

• Published in: IEEE transactions on visualization and computer graphics Vol. 25; no. 1; pp. 470 - 480
• Main Authors: Jaemin Jo, Vernier, Frederic, Dragicevic, Pierre, Fekete, Jean-Daniel
• Format: Journal Article
• Language: English
• Published: United States IEEE 01.01.2019; The Institute of Electrical and Electronics Engineers, Inc. (IEEE); Institute of Electrical and Electronics Engineers
• Subjects: aggregation; Cartography; Computational modeling; Computer Science; Data management; Data points; Data visualization; declarative specification; Density; density maps; Histograms; Human-Computer Interaction; Image color analysis; multiclass scatterplots; Rendering (computer graphics); Scalability; Semantics; Task analysis; Visualization; visualization grammar; visualization grammar; multiclass scatterplots; aggregation; Scalability; declarative specification; density maps

Multiclass maps are scatterplots, multidimensional projections, or thematic geographic maps where data points have a categorical attribute in addition to two quantitative attributes. This categorical attribute is often rendered using shape or color, which does not scale when overplotting occurs. Whe...