esItems {esmprep}

esItems

Description

esItems registers the ESM questionnaire items as opposed to variables containing information about the questionnaire, e.g. the time stamps of when it was started and finished.

Usage

esItems(dfList, RELEVANTVN_ES = NULL)

Arguments

dfList

a list. Each element of the list must be a data.frame. Each data.frame is a separate raw ESM dataset/an ESM questionnaire version. If there is just one ESM version the list therefore contains one data.frame.

RELEVANTVN_ES

a list. This list is generated by function setES and it is extended once either by function genDateTime or by function splitDateTime.

Value

A list with all the item names per ESM questionnaire version. Columns specifying dates, times, or IMEI numbers - as specified in function setES - are not used in function esPlausible, which takes the result of esItems as 2nd argument.

See Also

Exemplary code (fully executable) in the documentation of esmprep (function 11 of 29).

Examples

# o=o=o=o=o=o=o=o=o=o=o=o=o=o=o=o=o=o=o=o=o=o=o=o=o=o=o=o=o=o=o=o=o=o
# Prerequisites in order to execute esItems. Start ------------------
# Use example list delivered with the package
RELEVANTVN_ES <- RELEVANTVN_ESext
# keyLsNew is a list of datasets, also delivered with the package
rmInvLs <- rmInvalid(keyLsNew, RELEVANTVN_ES)
# Prerequisites in order to execute esItems. End --------------------
# -------------------------------------------------------
# Run function 11 of 29; see esmprep functions' hierarchy.
# -------------------------------------------------------
# Extract the item names of the raw ESM datasets. rmInvLs[["dfValid"]]
# is one of the results from function 'rmInvalid'
plausibItems <- esItems(dfList=rmInvLs[["dfValid"]], RELEVANTVN_ES)
# o=o=o=o=o=o=o=o=o=o=o=o=o=o=o=o=o=o=o=o=o=o=o=o=o=o=o=o=o=o=o=o=o=o