FME Desktop 2022: How to identify gaps between the polygons of same layer?

Hi @jamal​ 

With the attribute _overlaps is not good for you?

Thanks in Advance,

Danilo

Perhaps you can try the AreaGapAndOverlapCleaner transformer?

1)    The “AreaOnAreaOverlayer” tool doesn’t catch the gaps

2)    The “AreaGapAndOverlapCleaner” tool doesn’t identify the gaps\\overlap but rather resolve

Is there a tool that can identify the gaps\\overlaps?

If you're looking for gaps, use the AreaGapAndOverlapCleaner, then use the repaired output as clippees and your original geom as the clipper. The Outside port will have the gap geometries

Thank you for the help.

My issue here is to identify the gaps and overlaps BUT not to resolve them

Of course, overlaps can be easily identified, but i couldn't figure out who to do so for gaps.

is this still be possible?

Sample data and workbench are attached

Take a look at the DonutHoleExtractor.

I used the "aggregator" tool (based on the autocad_hatch field) then the "DonutHoleExtractor" but fails to identify the gaps

Hi @jamal​ ,

Not sure if you solved this question. I've tried some sort of solution, and here is my output:

In total there are up to 20 gaps between your 6 geometries.

Here is the workflow:

Let me know if you have any doubts,

Keep talking,

Juanma,

Use a Dissolver instead of an Aggregator.

That's great. However, in my case, gaps need to be indentified between all polygons considering a certain tolerance (say 55 meter).

Then how to catch the indicate gab below as the tolerance is less than 55 meter

The data is attached

The solution I posted outputs the gaps on the Outside port on the Clipper

Thank you very much geomancer for the help. It works perfectly

My thanks are extended to Juanma for the other approach provided

I applied it on the k22.dwg and it works fine

Many thanks hkingsbury for the useful input