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This fix can be applied to one or more selected Must Not Have Gaps errors. For example, soil polygons cannot include gaps or form voids-they must cover an entire area.Ĭreate Feature: The Create Feature fix creates new polygon features using a closed ring of the line error shapes that form a gap. Use this rule on data that must completely cover an area. You can either ignore this error or mark it as an exception. An error will always exist on the perimeter of the surface. All polygons must form a continuous surface. This rule requires that there are no voids within a single polygon or between adjacent polygons. This fix can be applied to one or more selected Must Not Overlap errors. This fix can be applied to one Must Not Overlap error only.Ĭreate Feature: The Create Feature fix creates a new polygon feature out of the error shape and removes the portion of overlap from each of the features, causing the error to create a planar representation of the feature geometry. You need to pick the feature that receives the portion of overlap using the Merge dialog box. Merge: The Merge fix adds the portion of overlap from one feature and subtracts it from the others that are violating the rule.
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Subtract: The Subtract fix removes the overlapping portion of geometry from each feature that is causing the error and leaves a gap or void in its place.
#Mapinfo 10 show area intersection between rings zip
It is useful for modeling administrative boundaries, such as ZIP Codes or voting districts, and mutually exclusive area classifications, such as land cover or landform type. This rule is used when an area cannot belong to two or more polygons. The polygons can share edges or vertices.
![mapinfo 10 show area intersection between rings mapinfo 10 show area intersection between rings](https://spatialpoint.com/wp-content/uploads/2013/10/mi_overview_12.jpg)
Requires that the interior of polygons not overlap. This fix can be applied to one or more Must Be Larger Than Cluster Tolerance errors.Īny polygon feature, such as the one in red, that would collapse when validating the topology is an error. In instances where this rule is violated, the original geometry is left unchanged.ĭelete: The Delete fix removes polygon features that would collapse during the validate process based on the topology's cluster tolerance. This rule is mandatory for a topology and applies to all line and polygon feature classes. Requires that a feature does not collapse during a validate process. To view this document, you need a copy of Adobe Reader. If this link does not work, you can open the topology_rules_poster.pdf from the \Documentation folder in the directory where you installed ArcGIS. Once you have discovered the topology errors, you can select the error on the map with the Fix Topology Error tool, or select the error from within the Error Inspector.įor a poster of the available topology rules and examples of them, see the ArcGIS Geodatabase Topology Rules PDF. Some topology rules, however, have no predefined fixes. Most topology violations have fixes that you can use to correct errors. A well-designed geodatabase will have only those topology rules that define key spatial relationships needed by an organization. Many topology rules can be imposed on features in a geodatabase. 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. Topology rules can be defined between subtypes of features in one or another feature class. Some topology rules govern the relationships of features within a given feature class, while others govern the relationships between features in two different feature classes or subtypes.
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You should carefully plan the spatial relationships you will enforce on your features. There are many topology rules you can implement in your geodatabase, depending on the spatial relationships that are most important for your organization to maintain. Creating or editing geodatabase topology requires an ArcGIS for Desktop Standard or ArcGIS for Desktop Advanced license. You can create simple, temporary topological relationships between features in ArcGIS for Desktop Basic.