StQT-class: S4 class of dataset transformations.

In Luis-Sanguiao/StQT: Transformation of Standard Questionnaires

Description

Definition of an S4 class named StQT for data transformation.

Details

The structure of the class StQT comprises 2 attributes:

• The attribute Rules, which is a data.frame with the transformation rules.

• The attribute Functions, which is a list of the functions used in the rules.

The rules are represented with the following fields in the Rules data.frame.

domain

Specifies where the rule is applied

output

Output variables

fun

Function to apply

input

Input variables

by

Variables to group by

order

Variables to order by

key

Key of the output variables

Examples

T1 <- new(Class = 'StQT', Rules = data.frame(
                             domain="",
                             output="VAR",
                             fun="*",
                             input="SD,SD",
                             by="",
                             order="",
                             key="",
                             stringsAsFactors = FALSE),
                             Functions = list(`*`=`*`))
T1
getRules(T1)
getFunctions(T1)

Luis-Sanguiao/StQT documentation built on May 7, 2019, 2:03 p.m.