ARCGIS GEODATABASE TOPOLOGY RULES PDF

There are many topology rules you can implement in your geodatabase, depending on the spatial relationships that are most important for your. Errors in GIS data mean any information or decisions based on that data are flawed. Geodatabase topology provides an automated, rule-based solution to. Topology in ESRI® ArcGIS® allows you to model spatial relationships between feature model. Topology errors are violations of the rules that you can easily.

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Requires that a line in one feature class or subtype must only touch other lines of the same feature class or subtype at endpoints. The square on the right indicates an error because it is a point that is not on the boundary of the polygon.

They can cross or touch themselves but must not have coincident segments.

This fix can be applied to one or more selected Must Not Overlap With errors. In instances where this rule is violated, the original geometry is left unchanged. The Subtract fix creates multipart features, so if the overlapping segments are not at the end or start of a line feature, you might want to use the Explode command on the Advanced Editing toolbar to create single-part features. If you have duplicate line features, select the line feature you want to delete from the Subtract dialog box.

This rule is useful for points that fall along a set of lines, such as highway signs along highways. Requires that points be separated spatially from other points in the same feature class or subtype. A well-designed geodatabase will have only those topology rules that define key spatial relationships needed by an organization.

Use this rule when points within one feature class or subtype should never occupy the same space, for example, when fittings in a water distribution network should not overlap. Requires that the interior of polygons not overlap. Must Cover Each Other. You can use Create Feature to create a new polygon in ruoes void in the center. Requires that lines be covered by the boundaries of area features. Requires that a line connect to at least two other lines at each endpoint.

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The Delete fix removes point features that are not properly within polygon features. Rulrs rule is used when area features of a given type must be located within features of another type. Requires that line features from the same feature class or subtype not cross or overlap each other. This fix can be applied to one or more selected Must Cover Geodatabzse Other errors. Many topology rules can be imposed on features in a geodatabase. If the line feature does not share any segments in common with the boundary of a polygon feature, the feature will be deleted.

Use this rule when you want points to be completely rulss the boundaries of polygons, for example, when state capitals must be inside each state. Feedback on this topic? Requires that line features not cross or overlap themselves. The Create Feature fix creates a new point feature geovatabase the centroid of the polygon feature that is causing the error.

If no point feature is found within the tolerance specified, the point is not snapped. Use this rule on data that must completely cover an area.

Geodatabase topology rules and topology error fixes—Help | ArcGIS for Desktop

Requires that points fall on the boundaries of area features. You need to pick the feature that receives the portion of overlap using the Merge dialog box. The Create Feature fix creates a new line feature from the boundary segments of the polygon feature generating the error. Requires that a line feature must touch lines from the same feature class or subtype at both endpoints.

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Requires that a polygon in one feature class or subtype must share arcbis of its area geodattabase polygons in another feature class or subtype. This rule is used when an area cannot belong to two or more polygons. The Simplify fix removes self-overlapping line segments from the feature in error.

Point errors are created where the points are outside or touch the boundary of the polygons. This is used when there must be a one-to-one correspondence between features of a polygon feature class and features of a point feature class, such as administrative boundaries and their capital cities.

Geodatabase topology rules and topology error fixes

If no point feature is found within the tolerance specified, the point will not be snapped. Delete Feature removes point features that are not properly within polygon features. The point feature that is created is guaranteed to be within the polygon feature. 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. The Extend fix will extend the dangling end of line features if they snap to other line features within a given distance.

Arc GIS for Desktop. Points in one feature class or subtype must be covered by lines in another feature class or subtype. Use this rule when points from one feature class or subtype should be aligned with points from another feature class or subtype, for example, when service meters must be coincident with service points in an electric utility network. Some topology rules govern the relationships of features within a given feature classwhile others govern the relationships between features in two different feature classes or subtypes.