I need to perform AffineWarper in Group By mode. Separate affine control vectors for separate group of objects. Any idea?
Best answer by takashi
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+17
- Contributor
- 7538 replies
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12 January 2016
- Best Answer
A possible way is to wrap the AffineWarper by a custom transformer and publish the "Parallel Process By" parameter as a transformer parameter. It's not exactly equal to the regular "Group By", but it works like that. Try the steps illustrated in this image.
Thanks a lot. It works.
After banging my head trying to figure out why this wasn't working, and using feature caching to do my debugging... I saw this handy post, https://knowledge.safe.com/questions/78585/how-to-add-group-by-to-any-transformer.html
With this IMPORTANT note:
One caveat I’ve noticed about this hack:- Make sure to turn off Feature Caching, otherwise the Group by won’t have any effect.
+16
- Contributor
- 1425 replies
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3 January 2019
A possible way is to wrap the AffineWarper by a custom transformer and publish the "Parallel Process By" parameter as a transformer parameter. It's not exactly equal to the regular "Group By", but it works like that. Try the steps illustrated in this image.
Good old wrap it in a custom transformer en voila! group by is possible!
+2
- Safer
- 327 replies
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16 January 2019
After banging my head trying to figure out why this wasn't working, and using feature caching to do my debugging... I saw this handy post, https://knowledge.safe.com/questions/78585/how-to-add-group-by-to-any-transformer.html
With this IMPORTANT note:
One caveat I’ve noticed about this hack:- Make sure to turn off Feature Caching, otherwise the Group by won’t have any effect.
@lanthar Glad you found that note helpful. Good news: We've fixed that bug in the latest 2019.0. You can test it out in the current beta. Available here: https://www.safe.com/support/support-resources/fme-downloads/beta/
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