Automatically performing varying levels of summarization of geographic data points in response to a user's selection of zoom level

摘要

A facility for summarizing a set of data points each having a geographic location is described. The facility specifies the display of a map showing a geographic area the specified by a user. The facility identifies a number of geographic regions in the geographic area that are of a type that is automatically selected by the facility in response to the identity of the geographic area. The map indicates, for a least one of the identified geographic regions, information that summarizes one or more aspects of the data points of the set that have geographic locations contained in the identified geographic region.