问题
I'm trying to generate ordinal correlated variables with GenOrd package. However, there are some problems.
I'm getting help on this page, which was written by Wesley
https://www.r-bloggers.com/simulating-random-multivariate-correlated-data-categorical-variables/
In this page, and most of other explanation about GenOrd package, the marginal distirbution must be set. In this page, the marginal distribution is
#The values are cumulative so for the first variable the first marginal will be .1, the second is .2, the third is .3, and the fourth is .4
marginal <- list(c(0.1,0.3,0.6),c(0.4,0.7,0.9))
> marginal
[[1]]
[1] 0.1 0.3 0.6
[[2]]
[1] 0.4 0.7 0.9
However, as far as I Know, the marginal distribution is as follows. (from English wikipedia)
So the sum of marginal probability is 1. However, in the second list in marginal object, the sum is 0.4+0.7+0.9=2
How can I interpret this object?
来源：https://stackoverflow.com/questions/56802094/how-to-define-marginal-distribution-in-genord-package