How to shrink/filter data per group?

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Peter Schneider
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Published on ● Video Link: https://www.youtube.com/watch?v=yuwE65p1Vk8


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How to shrink/filter data per group?
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(stackoverflow.com/users/22214822/enfifa)EnFiFa
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data.table filter r group



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Tags:
data.table
filter
group