I am using package LTM to estimate a Rasch model:
irtestimates <- rasch(binRasch)
I want to get a single vector containing theta estimates for all the
rows (individuals) in my data matrix (hopefully in the same order as
my data matrix) such that the length of the theta vector = the number
of rows (participants) in my data matrix. I am using:
theta.est <- factor.scores(irtestimates,method="EAP")
The problem is that this does not return a vector of ALL the theta
estimates, rather it gives me a summary of theta estimates associated
with each response pattern in my data along with the number of times
each response pattern occurs. Any ideas on how to get the complete
vector of theta estimates? Thanks,
Jimmy
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