zapSystemMissing

<p>Coerce ConQuest system missing values to NA. Note this is very slow and users should use the internal function conquestr::replaceInDataFrame where possible.</p>

internal


Extends 'ACER ConQuest' through a family of functions designed to improve graphical outputs and help with advanced analysis (e.g., differential item functioning).
Allows R users to call 'ACER ConQuest' from within R and read 'ACER ConQuest' System Files (generated by the command 'put').
Requires 'ACER ConQuest' version 5.12.3 or later. A demonstration version can be downloaded from <https://shop.acer.edu.au/acer-conquest-5.html>.

Dan Cloney

zapSystemMissing: zapSystemMissing

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