plot.mlteqc | R Documentation |
plot
method for class mlteqc
, which plots item parameter
estimates of one form agains the item parameter estimates of the base form
before and after conversion.
## S3 method for class 'mlteqc'
plot(x, form = 2, ask = prod(par("mfcol")) < x$itmp*2 && dev.interactive(), ...)
x |
an object of the class |
form |
test form. It can be specified by name or number. |
ask |
logical; if |
... |
further arguments passed to or from other methods. |
Michela Battauz
multiec
data(est2pl)
# prepare the data
mods <- modIRT(coef = est2pl$coef, var = est2pl$var, display = FALSE)
# Estimation of the equating coefficients with the multiple mean-mean method
eqMM <- multiec(mods = mods, base = 1, method = "mean-mean")
plot(eqMM, form = "T2")
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