topic Re: How to merge/dissolve 3D polygons with common ID to create a singlepart building? in ArcGIS Pro Questions

How to merge/dissolve 3D polygons with common ID to create a singlepart building?

AleksanderStysiak — Fri, 16 Feb 2018 15:22:47 GMT

Hi!

I have a 3D city model made out of individual polygons. Polygons forming one building have a common ID (also attr like Type: Wall, Roof). I need to combine/merge/aggregate together shapes beloning to each building, so when I select a building it markes an entire entity and not just one of the polygons. The output should be a shapefile or multipatch.

I tried using dissolve but it fails each time. I want to use data later in Pro and CityEngine.

Anyone has an idea how to do that kind of ID-based multipart to singlepart merge?

I attached also sample data

Thanks!

Re: How to merge/dissolve 3D polygons with common ID to create a singlepart building?

DanPatterson_Retired — Fri, 16 Feb 2018 15:43:06 GMT

It worked form me (did it in PRO, but that shouldn't matter)

I just dissolved on the ID field.

You just get the outline from the multipart... check the options I used

Re: How to merge/dissolve 3D polygons with common ID to create a singlepart building?

AleksanderStysiak — Tue, 20 Feb 2018 10:59:27 GMT

Hey Dan

Thanks for the input and your time.
I tried this approach earlier but with no result. I tried again with those settings you propose but it also fails.
There is not much that can be wrong with this so I cant figure out the issue.

Nevertheless, I fixed it with FME

Re: How to merge/dissolve 3D polygons with common ID to create a singlepart building?

LauraGockert — Tue, 06 Feb 2024 10:22:07 GMT

Hey Aleksander,

I have the same problem. How exactly did you fix it with FME?

Thanks for your help!