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I am using mirt pcakge. While using itemfit function in it, to know what is going in that function I debugged it and came across an internal function which called ProabTrace. I am not able to see the code of this function. I tried following things:

mirt:::ProbTrace
standardGeneric for "ProbTrace" defined from package "mirt"

function (x, Theta, ...) 
standardGeneric("ProbTrace")
<bytecode: 0x00000000086fe398>
<environment: 0x00000000086c1bf8>
Methods may be defined for arguments: x, Theta
Use  showMethods("ProbTrace")  for currently available ones.


showMethods("ProbTrace")
Function: ProbTrace (package mirt)
x="custom", Theta="matrix"
x="dich", Theta="matrix"
x="gpcm", Theta="matrix"
x="graded", Theta="matrix"
x="ideal", Theta="matrix"
x="nestlogit", Theta="matrix"
x="nominal", Theta="matrix"
x="partcomp", Theta="matrix"
x="rating", Theta="matrix"
x="rsm", Theta="matrix"

I don't know how to proceed from here. I thought it would return some object so that I can use the getMethod function to get the code. But that is not happening.

Any help please.

Best, Irshad

0 Answers0