Description Usage Arguments Value Author(s) References Examples
Tranforms a matrix of items into a new matrix where the select polytomous items have been converted into comperable dichotomous items with the same information.
1 |
data |
an object of class |
which.items |
a vector indicating which items should be transformed into the dichotomous form. Default uses all input items |
Returns an integer matrix
Phil Chalmers rphilip.chalmers@gmail.com
Chalmers, R., P. (2012). mirt: A Multidimensional Item Response Theory Package for the R Environment. Journal of Statistical Software, 48(6), 1-29. doi: 10.18637/jss.v048.i06
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