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Create a DIF line graph for item PCM thresholds

Source: R/easyRasch.R
RIdifFigThresh.Rd

Produces a panel of linegraphs showing item thresholds over DIF nodes.

Usage

RIdifFigThresh(dfin, dif.var)

Arguments

dfin

Dataframe with item data only

dif.var

DIF variable

Details

NOTE: only works with PCM data where all variables have multiple thresholds, since the threshpar() function has problems when dichotomous data are included.