I was looking to merge some features to improve the performance of some of my layers on my ArcGIS Server. I have a few very large polyline layers for our fiber network that are exported out of a CAD based program (Mapcom M4) every week and into a GeoDatabase. I did notice that some of the features have the same attributes and fiber ID's, but are separated into up to between 4-15 different lines. When I tested this out and manually dissolved the featueres into one based on fiber ID it drastically improved performance. This would be a significant expense of time to do every week, though, and I was looking to make it part of my Weekly FME Workbench. I just wasn't sure what transformer would make the most sense to use to merge all the features with the same Fiber ID before writing them to the Geodatabase.

  • FeatureMerger or Aggregator are the two I'd look at to start with. Which transformers have you looked at? – Midavalo Jan 20 '16 at 1:22

Aggregator will merge geometries based on a specified attribute. If you aren't concerned with any other attributes you can tell it not to keep other attributes, otherwise it can concatenate/sum/average those too.

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  • OK I am trying out Aggregator now. It looks like what I needed! thanks – GravitaZ Jan 20 '16 at 19:26
  • Hmm, According to the workbench it seemed to work, but when looking at the actual tables it doesn't look like it did. I think I am using an older version, but does it look like I have the proper settings? I wanted to aggregate the ID's but keep the other attributes. i.imgur.com/6Fj8oQr.png i.imgur.com/xYKvJSB.png – GravitaZ Jan 21 '16 at 5:28
  • do the attributes differ across the different features (of the same ID)? You could possibly pull the attributes into your new dataset using a different transformer – Midavalo Jan 21 '16 at 7:22
  • Thank you! The Aggregator worked. I just had to set the Accumulate Attributes to "Yes" and Concatenate all the attributes besides ID. Thanks! – GravitaZ Jan 25 '16 at 21:29

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