Dive Deep into Metadata with Tplyr
summary
Tplyr provides per-cell provenance by storing a metadata object when you set metadata=true so each table cell records the variables and filters used; a helper get_meta_subset returns the exact row subset (defaults can add USUBJID), and those subsets display instantly in an 85-line Shiny demo that pops the contributing subjects on click. The package outputs formatted summary data frames, attaches metadata to ad hoc model results or plain data frames, and the interactive workflow noticeably cuts manual lookup time.
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