te_datastore_duckdb-class function

te_datastore_duckdb, functions and methods

This method is used internally by expand_trials to save the data to the "datastore" defined in set_expansion_options . class

## S4 method for signature 'te_datastore_duckdb'
save_expanded_data(object, data)

## S4 method for signature 'te_datastore_duckdb'
read_expanded_data(object, period = NULL, subset_condition = NULL)

## S4 method for signature 'te_datastore_duckdb'
sample_expanded_data(
  object,
  p_control,
  period = NULL,
  subset_condition = NULL,
  seed
)

Arguments

• object: An object of class te_datastore or a child class.
• data: A data frame containing the expanded trial data. The columns trial_period and id are present, which may be used in methods to save the data in an optimal way, such as with indexes, keys or separate files.
• period: An integerish vector of non-zero length to select trial period(s) or NULL (default) to select all files.
• subset_condition: A string of length 1 or NULL (default).
• p_control: Probability of selecting a control.
• seed: An integer seed or NULL (default).

Returns

A 'te_datastore_duckdb' object.

Slots

• path: Path to the duckdb file containing the data.
• table: .
• con: S4 object of class duckdb_connection.

Examples

temp_dir <- tempfile("csv_dir_")
dir.create(temp_dir)
datastore <- save_to_csv(temp_dir)
data(vignette_switch_data)
save_expanded_data(datastore, vignette_switch_data[1:200, ])

# delete after use
unlink(temp_dir, recursive = TRUE)