Proceedings of the Workshop on New Paradigms in Information Visualization and Manipulation, Kansas City, Missouri, November 6, 1999 (in conjunction with ACM CIKM'99), ACM New York, 26-34.
Information visualization displays can hold a limited number of data points, typically a few thousand, before they get crowded. One way to solve this problem with larger data sets is to create aggregates. Aggregations were used together with the Snap-Together Visualization system to coordinate the visual displays of aggregates and their content. If two displays each hold one thousand items then rapid access and visibility can be maintained for a million points. This paper presents examples based on a database of highway incident data.