R: Convert imputations from long format to 'mitml.list'

long2mitml.list {mitml}

R Documentation

Convert imputations from long format to `mitml.list`

Description

These functions convert data sets containing multiple imputations in long format to objects of class mitml.list. The resulting object can be used in further analyses.

Usage


long2mitml.list(x, split, exclude = NULL)

jomo2mitml.list(x)

Arguments

`x`	A data frame in long format containing multiple imputations (see 'Details').
`split`	A character string denoting the column in `x` that identifies different imputations (see 'Details').
`exclude`	A vector denoting the values of `split` that should be excluded.

Details

The function long2mitml.list converts data frames from the long format to mitml.list (i.e., a list of imputed data sets). In long format, all imputations are contained in a single data frame, where different imputations are denoted by split. This function splits the data frame into a list of imputed data sets according to split, excluding the values specified by exclude (see the 'Examples').

The jomo2mitml.list function is a special case of long2mitml.list which converts imputations that have been generated with jomo (see the jomo package)).

Value

A list of imputed data sets with class mitml.list.

Author(s)

Simon Grund

Examples

data(studentratings)
require(jomo)

# impute data using jomo (native functions)
clus <- studentratings[, "ID"]
Y <- studentratings[, c("ReadAchiev", "ReadDis")]
imp <- jomo(Y = Y, clus = clus, nburn = 1000, nbetween = 100, nimp = 5)

# split imputations
impList <- long2mitml.list(imp, split = "Imputation", exclude = 0)
impList <- jomo2mitml.list(imp)

[Package mitml version 0.4-5 Index]

Convert imputations from long format to mitml.list