lava.tobit (version 0.5)

binary: Defines variables as binary

Description

Defines variables of a latent variable model (lvm-object from the lava package) as binary.

Usage

# S3 method for lvm
binary(x,var=NULL, ...)
# S3 method for lvm
binary(x, ...) <- value

Arguments

x

lvm-object

…

Additional arguments parsed to lower-level functions

var

Formula or vector of variable names

value

Formula or vector of variable names

Value

lvm-object (or vector of variable names if called without any arguments)

Details

This function sets the status of variables to 'binary'. For use with the estimate method a probit-link will be assumed. Used with the sim method normal distributed data will be simulated followed by thresholding at 0. To simulate data where the dichotomous variable has a direct effect on the outcome the distribution method can be used, e.g. distribution(m,~x) <- binomial.lvm("probit").