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Hello,

 

 

I'm trying to calculate the amount of overlays of features in a geodatabase. Im using the AreaOnAreaOverlay transformer for this. However, what comes out of the transformer is quite strange. The amount of input features is 13, yet, the _overlays attribute gives values upto 24. Additionally, it fills in gaps (holes) that aren't part of the shape but are surrounded by the shape. 

 

 

In the attached file I provided the workspace and files I'm working with. 

 

ftp://ftp.safe.com/incoming/FME_AOA_error.zip

 

 

I would really appreciate the assistance, I don't quite understand how this is happening. 
Oh, I'm sorry. I'm using FME desktop 11 32bit on windows vista, if it makes any difference. 
I'm having some trouble downloading your file, so it's hard to come up with an answer. If 2 features overlap, the AreaOnAreaOverlayer will cut them up into the overlapping parts and create an _overlaps attribute per part that notes how many parts exist on that particular spot.

 

 

Off the top of my head, the only way to get that kind of _overlaps numbers with only 13 input features is if they're either large aggregates or self intersecting ones. But again, I'd have to see your actual data to give a defiitive answer.
Hello RedGeographics,

 

 

Thanks for your reply; another attempt at uploading the data: https://sendit.wur.nl/Download.aspx?id=7266daf4-36d5-4bc2-bfc7-e768a6737545
It seems like the previous file already reached the limit on downloads.

 

 

https://sendit.wur.nl/Download.aspx?id=79d09597-91b4-4a5a-b225-f1c0d5cb54e1

 

 

 

Hi,

 

  I saw your workspace. Probably, you should check "Group by" parameter of Aggregator. If you erase "_overlaps" in the parameter box, what will happen?  
Hello Takeshi,

 

That doesn't quite fix it. Holes are still filled with overlaps. Even when the aggregator is entirely removed (or a visualizer is connected prior to the aggregator) the problem persists. Thanks for helping though!
I've contacted the help desk, apparently FME 2012 has a FILEGDB reader that does work while the GEODATABASE_FILE reader of 2011 doesn't.  

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