Wat is PDF Spiritual ARCGIS GEODATABASE TOPOLOGY RULES PDF

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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A bus route feature class must not depart from the streets defined in the street feature class. Use this rule when you want to model points that are coincident with the ends of lines, for example, when street intersections must be covered by the endpoints of street centerlines.

Use this rule on data that must completely cover an area.

Geodatabase topology rules and fixes for point features—ArcGIS Pro | ArcGIS Desktop

Xrcgis can use Create Feature to create a new polygon in the void in the center. Points cannot overlap within the same feature class or subtype.

Using the Create Feature fix for this specific error can create overlapping polygons. The Merge fix adds the geometry of one line feature into the other line feature causing the error.

Delete Feature removes point features that aarcgis not coincident with the endpoint of line features. Boundary corner markers might be constrained to be covered by the endpoints of boundary lines. They can cross or touch themselves but must not have coincident segments. This rule is useful where lines must only be connected at endpoints, such as in the case of geodatqbase lines, which must split only connect to the endpoints of back gfodatabase lines and cannot overlap each other.

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This is useful for modeling cases where a fitting must connect two pipes or a street intersection must be found at the junction of two streets.

ArcGIS Desktop Help – Topology rules

You should carefully plan the spatial relationships you will enforce on your features. Where the purple lines overlap is an error. Requires that lines not overlap with lines in the same feature class or subtype. Points in one feature class or subtype must touch boundaries of polygons from another feature class or subtype. Topology rules can be defined between subtypes of features in one or another feature class.

Use this rule when topologgy want to model points that are coincident with lines, for example, when monitoring stations must fall along streams. The point feature that is created is guaranteed to be within the polygon feature.

If no feature is found within the distance specified, the feature will not extend to the distance specified. To view this document, you need a copy of Adobe Reader.

The Create Feature fix creates a new point feature at the centroid of the polygon feature that is causing the error. Requires that lines from one feature class or subtype must be covered by the lines in another feature class or subtype.

Remember that you can mark this error as an exception. This is useful when the point features are related to polygons, such as wells and well pads or address points and parcels. This fix can be applied to one or more selected Must Cover Each Other errors.

Requires that a feature does not collapse during a validate process. The Subtract fix removes line segments that are not coincident with the boundary of polygon features. This fix can be applied to one or more Must Topolohy Have dangles errors. The Trim fix rulds trim dangling line features if a point of intersection is found within a given distance. Requires that points in one feature class must be covered by the endpoints of lines in another feature class.

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If you select two errors and use the Create Feature fix, the result will be one polygon feature per ring. Must Not Intersect With. The Delete fix removes line features that are not within polygon features. 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. It does not constrain the covering portion of the line to be an endpoint. If the distance value is 0, lines will be trimmed back until they find a point of intersection.

This rule is used when there are lines from two layers that should never cross each other or in cases where the intersection of lines should only occur at endpoints, such as streets and railroads.

ArcGIS Pro

If no feature is found within the distance specified, geodatzbase feature will not be trimmed, nor will it be deleted if the distance is greater than the length of the feature in error.

Requires that a line feature must touch lines from the same feature class or subtype at both endpoints. Points are errors when they are outside a polygon.

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. The Snap fix will snap dangling line features to the nearest line feature within a given distance.