Hi @nikkia

Could you share us the picture from your data?

Thanks,

Danilo

@danilo_fme I am trying to desegregate polygons then dissolve them and the aggregate by different field.

keeping the Area Gap and overlap cleaner to default.

Hi @nikkia,

By default, the AreaGapAndOverlapCleaner doesn't have a tolerance set and the Fill Gaps parameter is set to no. Did you set the tolerance to Automatic or have you defined a value for the tolerance parameter and have you set the Fill Gaps parameter to Yes? There is an excellent blog article that explains how Automatic Tolerance works in FME in case you are curious to find out how it works.

Additionally, it might be helpful to review the Data QA Identifying Sliver Overlaps and Gaps in Polygon Coverage article as it goes over a couple of methods for correcting these errors.

I did set up the tolerance to Automatic and Fill Gaps parameter to Yes but still it didn't clean up the gaps. That's why was wondering whats going on. i am going to try custom value. thanks for sharing those articles!