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Populate County name in another shapefile

jaykapalczynski

I am trying to think of how to populate the County name (County Polygon shapefile) in my Zip Code shapefile (polygon).

The challenge is that the Zip Code polygons sometimes cross 2 or three County Boundaries.

I have a Zip code Poly and I want to populate a field (county) within the Zip Code shapefile with the County that it resides in. If the Zip crosses two Counties then I guess I would have to Split the County? Does that make sense?

Any thoughts?

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DanPatterson_Retired

union would produce irregularities unless you know the border edges match... this would be like splitting a polygon

The spatial join would be the one I would try first and you will probably have a many to one situation

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jaykapalczynski

I get totally different numbers for each...as you alluded to..not sure why

UNION = 1275 records

SPATIAL JOIN = 2076 records

So trying to figure out whats up with all that.... The spatial join gives me the County Polygon...when I select a County I can see the records but they select with the WHOLE County boundary...I cant see their individual boundaries...

Thoughts?

Can I explode them out or something? Like the UNION gives me?

jaykapalczynski

ok gonna try that now.

DanPatterson_Retired

union would produce irregularities unless you know the border edges match... this would be like splitting a polygon

The spatial join would be the one I would try first and you will probably have a many to one situation

jaykapalczynski

Am I doing a Union or a Spatial Join with Intersect?

DanPatterson_Retired

yes... makes sense, so you want a Union, but only attributes so basically a spatial join with an intersect

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