extract_variable_metadata: Extract Metadata from a Dataset
Description
Extracts variable names, types, and cardinality from a data frame, optionally integrating a codebook.
Usage
extract_variable_metadata(dat, codebook = NULL)
Value
A data.frame with columns: `varname`, `class`, and `n_unique`.
Arguments
- dat
A data.frame.
- codebook
Optional path to a codebook file (.csv, .tsv, .json, .yaml, .txt, or .pdf)