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What is the difference between simple features and topological features?
The features participating in a topology are still simple feature classes—rather than modifying the definition of the feature class, a topology serves as a description of how the features can be spatially related.
What are topological features?
In general, a topological data model manages spatial relationships by representing spatial objects (point, line, and area features) as an underlying graph of topological primitives—nodes, faces, and edges. Topology can also be used to model how the geometry from a number of feature classes can be integrated.
What is spatial topology?
The notion of spatial topology presents a network view as to how the primary objects become interconnected via. the contextual objects. A spatial topology can be represented as a simplicial complex.
What is a topological diagram?
In cartography and geology, a topological map is a type of diagram that has been simplified so that only vital information remains and unnecessary detail has been removed. These maps lack scale, and distance and direction are subject to change and variation, but the relationship between points is maintained.
How we can create topology?
Create a topology using the Create Topology wizard
- In the Catalog pane, right-click the feature dataset to which you want to add a topology and click New > Create Topology.
- Name the new topology and specify the cluster tolerance.
- Check the boxes of the feature classes that will participate in the topology.
How are Topology rules defined in a feature class?
Topology rules can be defined between subtypes of features in one or another feature class. This could be used, for example, to require street features to be connected to other street features at both ends, except in the case of streets belonging to the cul-de-sac or dead-end subtypes.
What do you need to know about topology?
Click Add Rule . Topology rules allow you to define the permissible spatial relationships of features within and between feature classes that participate in the topology. Landownership parcels are usually not allowed to overlap each other. Add a rule to prevent your parcel features from overlapping each other.
What are the topology rules for a geodatabase?
A well-designed geodatabase will have only those topology rules that define key spatial relationships needed by an organization. Requires that a feature does not collapse during a validate process. This rule is mandatory for a topology, and applies to all line and polygon feature classes.
How is a topological relationship created in ArcGIS?
Creating topological relationships involves analyzing the coordinate locations of feature vertices among features in the same feature class as well as between the feature classes that participate in the topology.