StQ: S3 class for sets of _St_andarized _Q_uestionnaires

In david-salgado/StQ: Tools to manage metadata-incorporated key-value pair datasets

Description

Definition of an S3 class named StQ for sets of standardized questionnaires.

The structure of the class StQ comprises a list with 2 components:

• the component Data, which is an object of class data.table with at least two columns: IDDD and Value. It contains all statistical variables (including some metadata) together with their corresponding values. If Data is not specified as an input parameter, an empty data.table object with columns IDDD and Value will be initiated.

• the component DD, which is an object of class DD. with the definition and properties of all variables. If DD is not specified as an input parameter, an empty DD object with columns Variable, Sort, Class, Qual1 and ValueRegExp will be initiated.

Every variable name in the component Data must be present in the component DD.

Usage

StQ(
  Data = data.table(IDDD = character(0), Value = character(0)),
  DD = BuildDD()
)

Arguments

Data	Object of class data.table.
DD	Object of class DD

Value

Object of class StQ.

Examples

library(data.table)
data(ExampleDD)
data(ExampleStQ)
ExampleData <- getData(ExampleStQ)
Q <- StQ(Data = ExampleData, DD = ExampleDD)
Q
# Notice that only the slot Data appears on screen, but the object is not a Datadt data.table:
str(Q)

david-salgado/StQ documentation built on Aug. 12, 2021, 3:23 p.m.