| 摘要 |
Systems and methods are provided for rendering, on a spatial region of a map, summary information associated with map elements such as points of interest, according to selected attributes that may be dynamically filtered by the user. In some embodiments, summary data associated with the map elements within one or more sub-regions residing within, or overlapping with, the spatial region, is obtained, where the summary data includes, for each sub-region, the number of map elements within the sub-region that are associated with different permutations of the selectable attributes. The summary data is then processed to obtain summary information including the number of map elements within each sub-region that correspond to the set of selected attributes. |
