PCAmixdata (version 3.0)

tab.disjonctif.NA: Built an indicator matrix

Description

This function built the indicator matrix of a qualitative data matrix. Missing observations are indicated as NA.

Usage

tab.disjonctif.NA(tab,rename.level=FALSE)

Arguments

tab

a categorical data matrix.

rename.level

boolean, if TRUE all the levels of the qualitative variables are renamed as follows: "variable_name=level_name".

Value

Returns the indicator matrix with NA for missing observations.

Details

This function uses the code of the function "tab.disjonctif" implemented in the package FactoMineR but is different. Here, a NA value appears when a category has not been observed in a row. In the function "tab.disjonctif" of the package FactoMineR, a new column is created in that case. In the output of the function recodqual, the NA are replaced with 0.

Examples

# NOT RUN {
data(vnf)
X <- vnf[1:10,9:12]
tab.disjonctif.NA(X)
recodqual(X)
# }