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lineonlineoverlay - Functionality to exclude intersection points within the same feature class

Related products:Transformers

sammy
Supporter

If I want to find intersection points between two feature classes but I do not want to include the points where lines within the same feature class intersect.

As in these two examples:

 

A check box option to be able to exclude intersections within the same feature type would be one solution. 

Or, having two input ports and having an option to exclude intersections within the same input would be another solution.

 

As stated in one of the above cited threads it would be similar to the opposite results of using the “Group By” function on the fme_feature_type.

It seems unnecessarily complicated to have to add topologyBuilder just to be able to do this task as seems to be the general solution offered in both threads above.

 

The resulting functionality would be similar to the Intersect geoprocessing tool in ArcGIS Pro.

2 replies

andreaatsafe
Safer
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NewOpen

mark2atsafe
Safer
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The simplest way to handle this scenario is to use the option to merge attributes and then test for nodes that contain attributes from both feature classes. I mentioned it in this week’s What’s Up Wednesday newsletter.

That’s not to say that we shouldn’t consider this idea (I like the idea of an inverse group-by), just that there are certainly simpler workarounds than the TopologyBuilder.


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