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Topology describes non-metric relationships among geometric figures, such as adjacency, containment, and orientation. It is a branch of Mathematics, which deals in geometry without measurement.

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Why does Erase give ERROR 999999 (Error executing function Invalid Topology Negative point v...

See Why Intersect gives ERROR 999999: Error executing function Invalid Topology [Too many lineseg endpoints]? … There are some other workarounds, none of them bulletproof, suggested in Invalid Topology [Topoengine error] from ArcGIS for Desktop? …
GeorgeC's user avatar
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9 votes
2 answers
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Why Intersect gives ERROR 999999: Error executing function Invalid Topology [Too many linese...

Invalid Topology [Too many lineseg endpoints.] Failed to execute (Intersect). … Failed at Sun Oct 23 04:09:12 2011 (Elapsed Time: 1 hours 50 minutes 2 seconds) Is this really a topology issue or a file size issue? …
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2 votes
2 answers
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Why does Erase give ERROR 999999 (Error executing function Invalid Topology Negative point v...

Invalid Topology [Negative point valence.] Failed to execute (Erase). …
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