I need an AUTOMATED way to find same parcel number, merge them, then go to next one.

[PeterStein1]

I have multiple slivers in a parcel layer and need to merge the slivers that match eachother. There are so many that I would benefit greatly by some type of script. The process would be to look for the first set of matching PIN #'s, then merge them (choosing the prodominent attributes between matching parcel pieces is not a concern in this particular project). Next, automatically go to the next record with matching PIN#'s and merge them. This would continue until the last record. I currently have created a new field called "dups" and ran the python script:
uniqueList = []
def isDuplicate(inValue):
  if inValue in uniqueList:
    return 1
  else:
    uniqueList.append(inValue)
    return 0



isDuplicate(!PIN14!)

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This script places a 1 in the dups column indicating it has a duplicate PIN# of another record. The "other" record does not get a number by it.


I would greatly appreciate any help with this to cut my work flow time down,

Thank you!

[JohnSobetzer]

A dissolve using the PIN# didn't work?

[JeffBarrette]

Have you tried using the Eliminate function.  Is was built for this purpose.

Here is the summary:

Eliminates polygons by merging them with neighboring polygons that have the largest area or the longest shared border. Eliminate is often used to remove small sliver polygons that are the result of overlay operations, such as Intersect or Union.

Jeff