Hi, I this fixes the issue, I think. Would you mind to check? I also tried to make the code more understandable. Maybe let's have a discussion about the assumptions used here?

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Attention: 1 lines in your changes are missing coverage. Please review.

Comparison is base (70157bb) 73.31% compared to head (4fd992c) 74.40%.
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@@            Coverage Diff             @@
##             main     #211      +/-   ##
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+ Coverage   73.31%   74.40%   +1.09%     
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  Files          43       43              
  Lines        1825     1817       -8     
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+ Hits         1338     1352      +14     
+ Misses        487      465      -22     

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Sorry, I saw your request too late. I'm testing on my data right now that caused the problem in the first place.

@goergen95 I think the original problem is solved, but it's still failing for me because the calc_landcover function returns zero-length tibbles instead of NAs. I'm currently going through my data to identify a reproducible example

But shouldn't that be covered for with 87b99ba?

I don't have the original error anymore, because my session crashed. But I think I received the new error message from calc_indicators:

This would mean that the landcover indicator returned a zero-length tibble. That's my guess at least. I'm still looking for the offending polygon.

Oh, I see what you mean now. So there is a bug in the landcover function that is not directly related to this PR.

You're right, I'll add it as an issue, I managed to find a reprex now, too.