在 ArcGIS Pro 中，拓扑是指一组特定的工具和方法，用于定义点、线和面要素之间的空间关系，并在创建或修改要素时维护这些关系。
There are two types of topology in ArcGIS Pro: map topology and geodatabase topology. You can use either or both to help you manage and maintain the accuracy of feature data with respect to coincidence, adjacency, containment, and connectivity.
| Type | Description |
|---|---|
Map topology | 地图拓扑是一种拓扑编辑模式，它在编辑重合和重叠要素时创建临时的拓扑关系，来保持这些要素之间的拓扑连续性。 可以在功能区的编辑选项卡的管理编辑内容组中启用或禁用地图拓扑。 |
Geodatabase topology | Working with geodatabase topology includes creating a topology for a dataset, assigning features and spatial rules, validating the features in a map, and using specific tools to fix errors and mark exceptions. |
只有可见且可编辑的要素图层才会参与地图拓扑。 因定义查询或比例范围限制而不可见的要素不会更新。
Geodatabase topology
Many features in S-57 and S-100 products share topological relationships with one another, which must be maintained to satisfy industry standards for data validation. An example of this is the coincidence of the coastline, land, and the sea. The land areas cannot cross over the coastline or the depth areas; conversely, depth areas cannot cross land areas or the coastline.
In scenarios in which you are editing these types of features, you can use geodatabase topology to ensure that these topological rules are followed. When you edit using a geodatabase topology, you can edit a single feature and have all features that participate in a topological relationship update automatically.
Learn how to add a geodatabase topology to a maritime geodatabase and how to use it to generate depth areas.
拓扑图
拓扑图是活动拓扑的边和节点的图形表示。 当启用拓扑编辑并使用拓扑编辑工具时，拓扑图会在当前地图范围内的相关要素上显示。
拓扑编辑通过使用特定的编辑工具与边和节点进行交互来完成。 在修改时，重合和相交几何之间的关系会被保留。 编辑完成后，相关要素会自动更新。
线和面要素：
- 边由两个节点定义，代表连续的线性边界。 边可以是简单的两点线或连接到其他边的复杂线形。
- 由两个节点定义的边上的折点与相关要素的折点相对应，后者确定了该要素的形状。
- 节点可以定义两条或多条边的交点。
点要素：
- 节点代表点要素。
- 与其他节点重合的点要素节点被约束为保持拓扑连接。
编辑地图拓扑的工具
启用地图拓扑后，可以使用以下编辑工具进行拓扑编辑：
