What is the correct code to generate a polychoric matrix in 'psych' following a complex error message (see below)?

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...

22 December 2022 5,922 1 View