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I have two shapefiles for district boundaries of India in 2001 and 2020. Because boundary of districts changed over time since districts merge and split, I want to export only those districts (they are polygons in shapefile) that have the same boundaries in both years (or are located within the tolerance distance, e.g. 10km).

I am using ArcMap 10.4.1.

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  • the mission is to get the districts from both the layers matching/overlapping 100%?? Commented Nov 24, 2020 at 16:01
  • Yes, exactly. I want to trace only those districts that did not change over time and thus have the same polygons in both shapefiles. (or within tolerance 10 km)
    – Melina
    Commented Nov 25, 2020 at 7:50

1 Answer 1

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You could try and merge the datasets into a single dataset then run Find Identical tool?

Before you merge make sure you add a field so that you can identify which dataset they came from.

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  • This doesn't work because districts were just placed under a newly formed state. So state name is different in 2 shapefiles for the same district name. That is why i want to do it for polygons because they didn't change, only names changed.
    – Melina
    Commented Nov 25, 2020 at 12:56
  • Find Identical works with the Shape field, not only the attribute fields. This is documented in the Help file.
    – Hornbydd
    Commented Nov 25, 2020 at 22:29

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