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Custom transformer propagating more attributes than desired

I
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I have defined a custom transformer, and it is outputting more attributes than what I want. I just want to output these two attributes (network_id and lower_network_id):

 

But when using it in the main workbench, it is also outputting attributes from the original input features:

 

I assume this is is because they automatically propagate all source attributes forward, but I want to avoid this, I just want the two-column list. How can I achieve this?

Best answer by takashi

Try inserting the AttributeKeeper before the output port to keep only required attribute.

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takashi
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  • takashiInfluencer
  • Best Answer
  • December 9, 2018

Try inserting the AttributeKeeper before the output port to keep only required attribute.

I
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  • iboates
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  • December 9, 2018
takashi wrote:

Try inserting the AttributeKeeper before the output port to keep only required attribute.

This works, thanks.

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