Add Unique ID from one polygon layer to another based on spatial relationship

[JensJensen]

Hello

I'm have two polygon layers, one have been dissolved, the other is the original data with a lot of smaller polygons in it. The polygon layers overlap each other.

Each of the dissolved polygons have an unique id, that I would like to add to all the smaller polygons, so I can see where the smaller polygons belong.

I'm thinking some kind of join or similar based on the spatial relationship (overlap), but I can't get it too work. Tried adding a concept illustration:

Input:				Wanted output
Dissolved polygon ID	Size			Small polygon size	Small polygon ID
4479	10			1	4479
				1	4479
				1	4479
				1	4479
				1	4479
				1	4479
				1	4479
				1	4479
				1	4479
				1	4479

[FC_Basson]

You should be able to accomplish this with a Spatial Join: Spatial Join—Help | ArcGIS for Desktop 

[JensJensen]

Had to do a few different version of this, but got it to work, thanks!

I've added an extra credits question to Jayantas comment, feel free to weigh in, if you know the answer

[JayantaPoddar · Accepted solution]

Check the following steps

1. Convert the small polygons to points layer Feature To Point—Help | ArcGIS Desktop 

2. Do a Spatial Join to migrate the data from the Dissolved Polygons to the Points.

3. Do a Spatial Join again to migrate the data from points to smaller polygons.

4. Delete the unwanted fields from the layer with smaller polygons. Delete Field—Help | ArcGIS Desktop 

[JensJensen]

Thank you, both of the suggestion works. Much appreciated.

Another question a bit different, can you convert a raster too vector, without it grouping raster cells, so that basically each raster cell becomes a polygon?

Input raster				Unwanted output vector				Wanted output in vector
No data	1	No data		No data	1	No data		No data	1	No data
3	1	8		3		8		3	1	8
2	2	4		2		4		2	2	4

[JayantaPoddar]

Check How To: Convert each pixel of a raster into a polygon

[JensJensen]

That would work perfectly, just one little hiccup I only have an ArcGIS Standard license with Spatial Analyst.

[JayantaPoddar]

Alright.

While creating Fishnet, keep Geometry Type as Polygon.

Then do a Spatial Join to migrate the values of points to the polygons.

*No need to do Feature to Polygon step

[JensJensen]

How did I miss that I could create polygons with the fishnet. Thank you very much, exactly what I needed!