item_utils: Internal utilities for 'item'/'concept' objects

In ricu: Intensive Care Unit Data with R

Internal utilities for item/concept objects

Description

Several internal utilities for modifying, querying ans subsetting item and concept objects, including getters and setters for itm variables, callback functions, cncpt target classes, as well as utilities for data loading such as prepare_query() which creates a row-subsetting expression, do_callback(), which applies a callback function to data or do_itm_load(), which performs data loading corresponding to an itm

Usage

prepare_query(x)

try_add_vars(x, ..., var_lst = NULL, type = c("data_vars", "meta_vars"))

get_itm_var(x, var = NULL, type = c("data_vars", "meta_vars"))

set_callback(x, fun)

do_callback(x, ...)

do_itm_load(x, id_type = "icustay", interval = hours(1L))

n_tick(x)

set_target(x, target)

get_target(x)

subset_src(x, src)

## S3 method for class 'item'
subset_src(x, src)

## S3 method for class 'cncpt'
subset_src(x, src)

## S3 method for class 'concept'
subset_src(x, src)

Arguments

x	Object defining the row-subsetting
...	Variable specification
var_lst	List-based variable specification
type	Variable type (either data or meta)
var	Variable name (NULL) returns all available
fun	Callback function (passed as string)
id_type	String specifying the patient id type to return
interval	The time interval used to discretize time stamps with, specified as base::difftime() object
src	Character vector of data source name(s)

Value

• prepare_query(): an unevaluated expression used for row-subsetting

• try_add_vars(): a (potentially) modified item object with added variables

• get_itm_var(): character vector of itm variables

• set_callback(): a modified object with added callback function

• do_callback(): result of the callback function applied to data, most likely (id_tbl/ts_tbl)

• do_itm_load(): result of item loading (id_tbl/ts_tbl)

• n_tick(): Integer valued number of progress bar ticks

• set_target(): a modified object with newly set target class

• get_target(): string valued target class of an object

• subset_src(): an object of the same type as the object passed as x

ricu documentation built on Sept. 8, 2023, 5:45 p.m.