Rasch modelling in R


New Member
I am currently calculating a Rasch model using the eRm package in R. However, when I want to calculate the martin-loef test using the function
MLoef(res1, splitcr="median") I get the error message:

Error in MLoef(res1, splitcr = "median") : Martin-Loef Test with NA currently not available

Has anyone of you ever seen such an error message and can help me solve it?

Also, when I want to plot the empirical ICC curve using the function plotICC(res1, empICC= list("raw")), I only get the model implicated ICC curve, not the empirical one.

Does anyone of you know why this is the case?

I would be happy about any advice. Thanks and best regards :)