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Thread: ArcEditor 10 cannot cut donut holes in existing polygons

  1. #1
    David Nabers
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    Default ArcEditor 10 cannot cut donut holes in existing polygons

    Hi all,

    I am extremely frustrated right now. I have to cut out areas from a forest cover shapefile ("Existing Forest") and cannot do it. I am using templates. Here's what I do:
    1. Start an editing session
    2. Start the snapping toolbar and pick the vertex snapping button
    3. Pick the layer's template, the polygon tools become enabled
    6. Use the Straight Segment tool to draw the polygon defining the area to be removed.
    7. Finish the drawing
    8. Stop and Save edits. Re-start editing, select and delete the drawn polygon. It disappears, but the surrounding polygon is not cut because the deleted polygon overlaid it, it was not cut into it.

    So, what am I doing wrong? The "donut hole" entries in the forums seem to all be for 9x. In 9x one could pick a cut polygon task, which worked nicely, but that has been removed in 10. Do I have to create a new polygon feature and use that to clip the Existing Forest layer?

    Thanks for any help.

    David

  2. #2
    David Nabers
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    Default Re: ArcEditor 10 cannot cut donut holes in existing polygons

    OK, I see what is wrong. I had tried using the Cut Polygon tool but it never made a polygon - only a line which would not do the trick (which is why I started trying the Straight Segment tool). It never made a polygon because the last vertex was not snapping to the first one. I played with the snapping distance and it finally worked, but Arc does not give any indication if it is snapping or not (like it does when snapping to another feature layer, and as I'd expected).

    So...all ends well.
    Last edited by dkngis; 11-27-2011 at 09:55 AM.

  3. #3
    Joshua Damron
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    Default Re: ArcEditor 10 cannot cut donut holes in existing polygons

    David,
    I'm glad you figured out a fix. Another way to achieve this is to use the Clip tool as discussed here: http://help.arcgis.com/en/arcgisdesk...0004000000.htm. Know that when clipping you can only have one polygon selected at a time and taht it will clip all editable polygon layers that are visible.

    You can find the Clip tool in the Editor toolbar via the Editor pull down menu. I use it fairly regularly so I have added teh tool as a button on my toolbar via the Customization menu

    It sounds like you got the Cut Polygon tool to work for you. In my experince the Cut Polygon Tool usually only works if I begin my cut by placing a vertice outside of the polygon boundary, enter the ploygon for my cut then exit the polygon at another location.

    Hope this helps!
    Joshua Damron
    City of Healdsburg
    Department of Public Works
    www.ci.healdsburg.ca.us/

    Arc/Info 10.2
    Small Government ELA
    Windows XP Pro x64

    Help people like me find answers! If your question was answered don't forget to click the mark as answer check at the right hand side of the post.

  4. #4
    Rhonda Glennon

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    Default Re: ArcEditor 10 cannot cut donut holes in existing polygons

    Also, when trying to cut out a hole, you should turn on Snap To Sketch on the Snapping toolbar menu. That will make sure your cutting line makes a complete ring inside the polygon.

    http://help.arcgis.com/en/arcgisdesk...000003q000000/
    Esri Product Engineer
    ArcGIS for Desktop team

  5. #5
    Sam Coggins
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    Default Re: ArcEditor 10 cannot cut donut holes in existing polygons

    Can always use the Erase tool as well...

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