JSON Dataset Structure with Metadata — json_data

Generates a JSON representation of a dataset’s structure. Each column includes class, number of unique values, and optionally a truncated list of values unless excluded by type or pattern. All columns are retained in the output.

json_data_structure(
  dataset,
  dataset_name = NULL,
  n_first = 100,
  cols_exclude = "(bsn|id$|num[mb]er)",
  output_file = NULL
)

Arguments

dataset: data.frame Input dataset.
dataset_name: Optional name of dataset, used in JSON root.
n_first: Maximum number of unique values to include.
cols_exclude: Regular expression of column names to exclude values from.
output_file: Output path for JSON file.

Value

Invisibly returns the structured list written to JSON.