WMS:Delete Duplicates
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The triangulation algorithm assumes that each of the vertices being triangulated are unique in the xy plane, i.e. no two vertices have the same xy location. When a new set of vertices is imported to WMS, duplicate vertices should be removed by selecting Vertices | Delete Duplicates from the TIN menu. Otherwise, WMS may abort when the vertices are triangulated. The tolerance for duplicate vertices can be set in the TIN Options dialog.
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