tvmediation (version 1.1.1)

LongToWide: Function to transpose the data from long to wide format

Description

Transposing a dataset with repeated measurements/responses for each subject from longitudinal to wide format.

Usage

LongToWide(subject.id, time.sequence, outcome, verbose = FALSE)

Value

mat.wide

a matrix in wide format, in which each column is the outcome for each subject and each row is the time sequence

Arguments

subject.id

a column of subject identifiers

time.sequence

a column of time points

outcome

a column to be transposed

verbose

TRUE or FALSE (default = FALSE) prints output to screen (OPTIONAL INPUT)

Details

If data is not sorted by subject.id, a warning message will appear. The function will then sort the data by subject.id. It is recommended that the user sorts the data prior to using this function.

Examples

# CREATING A TRANSPOSED MATRIX FOR MEDIATOR `WantToSmokeLst15min`
data(smoker)
mat.wide <- LongToWide(smoker$SubjectID,
                       smoker$timeseq,
                       smoker$WantToSmokeLst15min)