data set (227 case x 6 items, no missing values) name = 'nepr'
code entered is:
>out=polychoric(nepr)
error message is:
Error in if (any(lower>upper)) stop("lower>upper integration limits"): missing value where TRUE/FALSE needed
In addition: warning messages:
1: In polychoric(nepr): the items do not have an equal number of response alternatives, global set to FALSE
2: in qnorm(cumsum(rsum)[-length(rsum)]): NaNs produced