![]() The figure and table below explain the statistical calculations of a point layer within a hypothetical boundary. The results will be displayed using graduated symbols. Point layers are summarized using only the point features within the input boundary. The Add minority, majority check box will return the groups with the lowest and highest counts and the Add percentages check box will return the percentage of points in the minority and majority groups. A summary table listing each feature and statistic by group field value will also be created. The overall statistics are given numerically and the grouped statistics are given in chart form within the pop-up. Both statistics can be viewed in the result layer's pop-up. When statistics are grouped by a field, the statistics are calculated for both the area as a whole and for each group. Statistical calculations can also be grouped using a field with categorical values. The statistics will be calculated on each area separately. Basic statistics (sum, minimum, maximum, average, and standard deviation) can also be calculated on numerical fields. The most basic aggregations will calculate a count of the number of points in each boundary. The difference in result layers when boundaries with no points are kept (left) or not kept (right) Unchecking the box may have a significant effect on the result areas. When the box is unchecked, the areas with no points are completely removed from the result layer. Areas with no points will be empty and have a count of 0. ![]() When the box is checked, all of the areas used in the analysis will be included in the result, regardless of the location of points. Keep boundaries with no points box is checked by default. ![]() The input parameters must include points to be aggregated and aggregation areas. Aggregate Points is designed to collect and summarize point features within a set of boundaries.
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