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I am new to FME, and I am trying to set up a workflow to transform some LRS segment feature data using the following rule: Assume that each feature segment has route identifier, begin and end measure, and a "split key" which is a value that indicates a percentage of the total segment length that I should split the event in TWO. I think this can be done with the Clipper transformer.

In addition however, I have another requirement where when I split the event into 2, I need to add a new value to the first segment only. This is what is tripping me up. After splitting the segment, how do I identify the first of the 2 splits and add the value. If my explanation is not clear enough, see the following example data

INPUT: Given the following example Event Segments:
ROUTE_IDBEGIN_MEASUREEND_MEASURESPLIT_KEYR1 0520%R23950%R2912100%

 

OUTPUT:
ROUTE_IDBEGIN_MEASUREEND_MEASURE

NEW_ATTR

R101AR115nullR236AR2612nullR2912A
Note that in the last segment, a split of 100% yields the same segment so there is only one segment in the resulting split list. Anyway, I am open to suggestions.

 


Thanks, Tom

I figured out how to do this. Just use the cloner and read the "Copy Number Attribute" to decide which new Feature to add the NEW_ATTR value to. Use the Snipper transformer to resize segments.

 

Alternatively, you can send the feature to a Snipper at first, then add NEW_ATTR = A to the Output feature, and add NEW_ATTR = <null> to the Remnants feature.

Snipper Parameters

  • Snipping Mode: Distance (Percentage)
  • Starting Location: 0

  • Ending Location: SPLIT_KEY

Alternatively, you can send the feature to a Snipper at first, then add NEW_ATTR = A to the Output feature, and add NEW_ATTR = <null> to the Remnants feature.

Snipper Parameters

  • Snipping Mode: Distance (Percentage)
  • Starting Location: 0

  • Ending Location: SPLIT_KEY
Thanks, didn't see that in the Snipper...another handy trick.

 

 

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