te_datastore_duckdb-class: te_datastore_duckdb, functions and methods

In CAM-Roche/RandomisedTrialsEmulation: Causal Analysis of Observational Time-to-Event Data

te_datastore_duckdb, functions and methods

Description

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

Usage

## 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).

Value

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)

CAM-Roche/RandomisedTrialsEmulation documentation built on April 14, 2025, 7:44 a.m.