Skip to main content
  • EN

I have a large data set that has been read from multiple autocad drawing files. At the current stage each feature has an attribute "project_num". There are many feautres (usually lines) for each project_num. I would like to get this down to a single "centroid coordinate" (preferably center of gravity) for all of the lines from each project_num.

 

CentrePointReplacer will generate a single point for every feature.

I tried FeatureMerger but am having problems. Both the Supplier and Requestor are set to "project_num". I have set the Feature Merge Type to geometry and checked "process Duplicate Suppliers" (build polygons) but get the same number of merged features as the input. If I use the "group processing" option, I still get the same number of merged features.

 

My current workaround is to use the DuplicateFilter before sending it to CenterPointReplacer. I have also tried creating a point cloud from all the resulting CenterPoints and then running CenterPointReplacer on the resulting point cloud.

 

I'm thinking there is a better way to do this!

You should be able to use an Aggregator with Group By set to 'project_num', then feed those aggregates into the CenterPointReplacer.

Thanks.

This looks promising but the CenterPointReplacer doesn't seem to like aggregate geometry. It rejects the first one and then terminates with an error.

I notice that CenterPointReplacer now only has two options for modes: "Centerline" or "Straight Skeleton". Both result in the same error.

Thanks.

This looks promising but the CenterPointReplacer doesn't seem to like aggregate geometry. It rejects the first one and then terminates with an error.

I notice that CenterPointReplacer now only has two options for modes: "Centerline" or "Straight Skeleton". Both result in the same error.

Instead of the Aggregator, you might consider using the HullAccumulator with Group By set to the 'project_num'. This should create an area feature around the input features, which you can certainly use in the CenterPointReplacer.

Reply


Community Stats

30,122
Posts
114,331
Replies
37,750
Members
Terms & ConditionsCookie settings
A product of
Safe Software respectfully acknowledges that we live, learn and work on the traditional and unceded territories of the Kwantlen, Katzie, and Semiahmoo First Nations.