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I'm working with zoning data at the parcel level for a city, e.g., each parcel has a zoning attribute. My goal is to create a contiguous zoning map without intersections from roads and highways. I manually edited a portion of the city to show my intended result.

Here is a portion of my initial map:

enter image description here

And here is a rough manual edit of how I'd like to dissolve the features and remove the gaps where the roads are:

enter image description here

Is there any geoprocessing that can achieve this result without manually editing the features to be contiguous?

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  • How are you defining the rules here? It looks like the green space in the middle is growing to meet the surrounding land uses. Why don't they grow to meet the open space?
    – Fezter
    Commented Jul 17, 2015 at 6:35
  • Related (and possibly duplicate of one): gis.stackexchange.com/questions/137060 or gis.stackexchange.com/questions/142253 or gis.stackexchange.com/questions/93515 And there's another one around here I can't find right now, but I think it was looking to fill in gaps with all one attribute. Do you have a street centerline layer? Your main problem now is getting the zones to meet in the middle of streets (which dissolve and aggregate cannot solve). With centerlines Jason's answer at gis.stackexchange.com/questions/98469 might help, or you could split street polys.
    – Chris W
    Commented Jul 18, 2015 at 1:00
  • What license level do you have and are centerlines available? I can think of a few workflows to do this, but they all require a higher license level (Advanced ideally) and having street centerlines available.
    – Chris W
    Commented Jul 18, 2015 at 1:03
  • I have an advanced license and do have street centerlines available.
    – zrobby
    Commented Jul 22, 2015 at 21:33

2 Answers 2

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A few suggestions.

  1. Make one large polygon the overlays everything and the use the Erase function (info license only) to get the gaps as polygons. Now break up this polygon into a fishnet and use spatial joins. Now Dissolve on the value that gives you the colors above.

  2. Use Spatial Allocation to fill the empty space. Polygonize it, do not simplify. Now Dissolve on the value that gives you the colors above.

Some instructions for using erase without the info license.

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There is Aggregate Polygons (Cartography) tool in ArcGIS. Looks like it is what are you looking for:

enter image description here

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    Note this tool requires an Advanced level license.
    – Chris W
    Commented Jul 18, 2015 at 0:53

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