ArcMap: Number of Vertices


In Workstation ArcInfo, the COUNTVERTICES command can be used to write the number of vertices for a line or polygon feature to the attribute table. Instructions provided describe how to do the same in ArcMap.


  1. Right-click the layer and select Open Attribute Table.
  2. Click Options > Add Field to add a new field to the layer.
  3. Name the field NumPoints and select Long Integer for the type.
  4. Right-click the new field and select Field Calculator.
  5. Check the Advanced box.
  6. Copy the following text into the Pre-logic VBA Script Code text box.
    Dim pPointCount As IPointCollection 
    Set pPointCount = [SHAPE]

  7. Type the following text into the lower text box.

  8. Click OK.


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