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Comparing feature classes with many features and many fields across multiple locations

  • December 3, 2024
  • 3 replies
  • 28 views

palmercd473
Contributor
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The three readers need to match up exactly. I would like to be able to see how many are perfect and how many need to be fixed. I would like the ones that don’t match to be dumped into an Excel spreadsheet that I can look at and make the necessary corrections. This is what I have so far. Top and bottom do match, middle one deliberately does not. What do I need to do and how should I proceed?

3 replies

birgit
Influencer
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  • Influencer
  • December 3, 2024

Hey you can use either the DuplicateFilter or the Matcher to try this. The DuplicateFilter only looks for matches in attributes and the Matcher can look at both attributes and geometry. You can find some documetation here:

Duplicatefilter: https://docs.safe.com/fme/html/FME-Form-Documentation/FME-Transformers/Transformers/duplicatefilter.htm

Matcher: https://docs.safe.com/fme/html/FME-Form-Documentation/FME-Transformers/Transformers/matcher.htm


nielsgerrits
VIP
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It depends. Do the features in the 3 different sets have a common id?

Tools for this kind of work are CRCCalculator, Matcher and ChangeDetector.


palmercd473
Contributor
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  • Author
  • Contributor
  • December 3, 2024

Yes, they do.


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