storeAnswer: Update Answer to Single Item

In catSurv: Computerized Adaptive Testing for Survey Research

Update Answer to Single Item

Description

Stores answer to item k to the Cat object's answers slot.

Usage

## S4 method for signature 'Cat'
storeAnswer(catObj, item, answer, returnJSON = FALSE)

## S4 method for signature 'character'
storeAnswer(catObj, item, answer, returnJSON = FALSE)

Arguments

catObj	An object of class Cat or class json.
item	An integer indicating the index of the question item
answer	The answer to the item to be updated
returnJSON	Boolean indicating whether the updated Cat object should be returned as a JSON object. Defaults to FALSE.

Details

The function storeAnswer updates the Cat object, but the updated object must be assigned to an object for the changes to be stored. See Examples.

Value

The function storeAnswer returns an updated object of class Cat with the answers slot reflecting the newly stored answer to the indicated item. All previously stored answers remain the same, and all unanswered questions remain NA.

Author(s)

Haley Acevedo, Ryden Butler, Josh W. Cutler, Matt Malis, Jacob M. Montgomery, Tom Wilkinson, Erin Rossiter, Min Hee Seo, Alex Weil

Examples

## Loading ltm Cat object
data(ltm_cat)

## Printing current answers slot
getAnswers(ltm_cat)

## Storing answer of 0 to item 1
ltm_cat <- storeAnswer(ltm_cat, item = 1, answer = 0)

## Now object reflects answer to item 1
getAnswers(ltm_cat)

catSurv documentation built on Dec. 4, 2022, 1:15 a.m.