Sigma_calculation {modgo} | R Documentation |
Calculate Sigma with the help of polychoric and polyserial functions
Description
This function is used internally by modgo
. It conducts
the computation of the correlation matrix of the transformed variables, which
are assumed to follow a multivariate normal distribution.
Usage
Sigma_calculation(data, variables, bin_variables, categ_variables, ties_method)
Arguments
data |
a data frame with original variables. |
variables |
variables a character vector indicating which
columns of |
bin_variables |
a character vector listing the binary variables. |
categ_variables |
a character vector listing the ordinal categorical variables. |
ties_method |
Method on how to deal with equal values
during rank transformation. Acceptable input:"max","average","min". This
parameter is passed by |
Value
A numeric matrix with correlation values.
Author(s)
Francisco M. Ojeda, George Koliopanos
[Package modgo version 1.0.1 Index]