+4
When I use the PointOnAreaOverlayer and the LineOnAreaOverlayer on FME Desktop 2019.1, the resulting _overlaps appear correct.
When I set the 'Group by' option to group by an attribute on the either the PointOnAreaOverlayer or the LineOnAreaOverlayer, the resulting _overlaps is set to 0 for all features.
@steveatsafe
+17
Hi @dmatranga, are you sure that the point (line) features and the area features have the Group By attribute with common name?
Hi @dmatranga, are you sure that the point (line) features and the area features have the Group By attribute with common name?
Hi @takashi, can you add more details to your answer. I am trying to understand how to use the group by in PointOnAreaOverlayer too and exeprience the same as @dmatranga.
+25
Hi @takashi, can you add more details to your answer. I am trying to understand how to use the group by in PointOnAreaOverlayer too and exeprience the same as @dmatranga.
The Group By option in those transformers will only perform the overlays for features that have the same values for the attribute(s) selected. It is as if you would set up a separate transformer for every unique combination of those selected attribute(s).
The Group By option in those transformers will only perform the overlays for features that have the same values for the attribute(s) selected. It is as if you would set up a separate transformer for every unique combination of those selected attribute(s).
Thanks @redgeographics it is clearer for me now.
Not what I need. I have posted a question regarding my issue : https://knowledge.safe.com/questions/102372/count-points-in-area-based-on-an-attribute-value.html
+4
Hi @dmatranga, are you sure that the point (line) features and the area features have the Group By attribute with common name?
Hey @takashi, the attributes for the points and areas do not have a common name.
Example:
Point Data
OwnerAddressTakashi123 A StreetTakashi456 B Street
Dan123 C StreetDan456 D Street......
Polygon Data
GRID_IDA1A2A3
Sending to the PointOnAreaOverlayer to count how many houses Takashi and Dan have within each of the 3 areas, 'Group by' is set to 'Owner' and I expect the following result:
GRID_IDOwner_overlapsA1Takashi9A1Dan1A2Takashi3A2Dan1A3Takashi0A3Dan6
Does that kind of process work with the PointOnAreaOverlayer 'Group by'? Or am I missing something?
+25
Hey @takashi, the attributes for the points and areas do not have a common name.
Example:
Point Data
OwnerAddressTakashi123 A StreetTakashi456 B Street
Dan123 C StreetDan456 D Street......
Polygon Data
GRID_IDA1A2A3
Sending to the PointOnAreaOverlayer to count how many houses Takashi and Dan have within each of the 3 areas, 'Group by' is set to 'Owner' and I expect the following result:
GRID_IDOwner_overlapsA1Takashi9A1Dan1A2Takashi3A2Dan1A3Takashi0A3Dan6
Does that kind of process work with the PointOnAreaOverlayer 'Group by'? Or am I missing something?
Don't set the Group By, but let the PointOnAreaOverlayer create a list on the areas, then use a ListHistogrammer (on the owner attribute) to get your end result.
Enter your username or e-mail address. We'll send you an e-mail with instructions to reset your password.
