Are you sure the polygons actually touch? I imagine that there can be a very small gap between polygons and as the spatial relator has no tolerance it will report as not touching.
The dissolver has a tolerance setting so it will dissolve polygons that the spatial relator reports as non-touching
Are you sure the polygons actually touch? I imagine that there can be a very small gap between polygons and as the spatial relator has no tolerance it will report as not touching.
The dissolver has a tolerance setting so it will dissolve polygons that the spatial relator reports as non-touching
Thanks for the reply.
Yes, they are definitely touching. I even went as far as buffering the polygons to be dissolved by a very small amount, just to be sure they were touching. It still didn't change the outcome.
Thanks for the reply.
Yes, they are definitely touching. I even went as far as buffering the polygons to be dissolved by a very small amount, just to be sure they were touching. It still didn't change the outcome.
Have you checked they are valid geometries?
Are you sure the polygons actually touch? I imagine that there can be a very small gap between polygons and as the spatial relator has no tolerance it will report as not touching.
The dissolver has a tolerance setting so it will dissolve polygons that the spatial relator reports as non-touching
@bjudes Can you attach a small sample of the data? Members of the community could then experiment and see what might be causing the problem
Just checking that they're in the same projection system?
@bjudes Can you attach a small sample of the data? Members of the community could then experiment and see what might be causing the problem
Hi @Mark Stoakes @ebygomm @hkingsbury Thanks for the reply. I've attached a sample of the data. The polygon I want to dissolve/relate to its neighbour is OBJECTID 1494. Let me know if you have any questions and thanks very much for the help.
B
Just checking that they're in the same projection system?
Hi,
Yes, everything is in the same projection, thanks for the reply.
B
Thanks for the reply.
Yes, they are definitely touching. I even went as far as buffering the polygons to be dissolved by a very small amount, just to be sure they were touching. It still didn't change the outcome.
I placed a geometry validator before the said spatial relator process takes place and it still does not work. The geometry also looks fine to view. Please see the sample I attached above, if you have time. Thanks
B
@bjudes Can you attach a small sample of the data? Members of the community could then experiment and see what might be causing the problem
The spatial relator reports that polygon with OBJECTID 1494 touches 5 others for me
@bjudes Can you attach a small sample of the data? Members of the community could then experiment and see what might be causing the problem
First a note, I'm running on 2018.1 and due to a bug in the latest version I need to run this version. The first image below shows the name I gave the relationship (_relationship_DES) and the second shows that there is no relation between my polygon 1494 and the surrounding ones. I have some other caveat, it needs to group by GUID, but there are a number of polygons in the vicinity with the same GUID, there are also 399 other polygons going through to be related, but almost all of these correctly relate to their neighbouring polygon.
Thanks
B
@bjudes I can't reproduce in FME 2018.1. For OBJECTID = 1494 I see:
Can you include your workspace, or better yet a small sample workspace that reproduces your isse. What Spatial Predicate are you using?
