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likly
2016 Apr 15
0
Difficulty with LRSM Rasch analysis with eRm package in R.
...This is from these commands:
rGrps = c(rep.int(1, nrow(X)))
results.LRSM <- LRSM(X, mpoints = 1, groupvec = rGrps, se = TRUE)
2. I don't know how to make a design matrix myself. I tried making one
with 1's along the diagonal, but it doesn't seem to work. I get an error:
Error in likLR(X, W, mpoints, groupvec, model, st.err = se, sum0,
etaStart) : Mismatch between number of rows (beta's) in W and number of
items (categories) in X!
This is from these commands:
rGrps = c(rep.int(1, nrow(X)))
W = matrix(data=NA, nrow=ncol(X), ncol=ncol(X))
for(i in 1:(ncol(X) - 8))
{
vec...