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35010
2009 Oct 14
1
ltm package error for grm (IRT)
Using the grm function (graded response IRT model) in the ltm package I
receive the following error:
Error: subscript out of bounds
for several scales I'd like to examine. Here's a small example that if run a
few times will likley produce the error at least once
ch<-array(round(runif(50,1,5)),c(10,5))
grm(ch,start.val="random")
## or