Displaying 1 result from an estimated 1 matches for "bart_pcm".
2010 Mar 15
0
Partial Credit Models using eRm
...nd 2 for the last two items).
mat1 <- matrix(c(rasch_bart$bart_bowel, rasch_bart$bart_blad, rasch_bart$bart_toil, rasch_bart$bart_feed, rasch_bart$bart_dress, rasch_bart$bart_stairs, rasch_bart$bart_trans, rasch_bart$bart_mob, rasch_bart$bart_groom, rasch_bart$bart_bath), nrow=100, ncol=10)
bart_pcm <- PCM(mat1)
summary(bart_pcm)
# Item location map
plotPImap(bart_pcm, item.subset=c(1,2))
but I can't get the person-item plot to work. I receive an error from R saying:
Error in xb[, dim(xb)[2]] : incorrect number of dimensions.
Secondly,
How would you interpret the followin...