密度分析计算区域内事件或物体的数量。计算结果揭示了该区域内点最集中的位置。您知道您还可以分析表示值大于1的点吗?仅仅因为可能有一组点并不一定意味着某个区域的浓度最高。您所需要的只是一个带有数量的属性。下面的示例展示了如何使用ArcGIS Pro 2.2中的Point density工具的属性执行密度分析。这张地图显示了报告犯罪的地址和地点。每个点可以代表一个以上的报告。报告的数量存储在属性表中的reports字段中。在Analysis选项卡上，单击Tools。 In the search box, type Point Density. On the Analysis tab, click Tools. Select your input points. For Population field, select the attribute with the quantity value. Your Point Density geoprocessing pane should look something like this: Set your output raster. The output density raster shows the areas with the highest density based upon the number of reports at each address location. When you compare running the Point Density tool without a population field versus with a population field, you can see the difference in the results. Point density without population Point density with population By adding in the population field, a high-density area becomes more apparent in the northern area of the map. Upon further investigation, that particular area contains a mall, shopping center, and movie theatre—which probably contributes to the higher number of crime reports. Spatial analysis provides the tools you need to make informed decisions. Learning how to use the available tools will help you choose the specific analysis tool that will best meet your particular needs. Are you new to spatial analysis? I suggest that you take a look at the Getting Started with Spatial Analysis web course. This course builds a foundation of knowledge on the six categories of spatial analysis and how they are used in the spatial analysis workflow. Additional information on density analysis can be found in the Calculating Density Using ArcGIS web course. *Note: The data used in this example is fictitious and does not represent real crime data.