R: Example for Centring in PCA

veuvage {ade4} | R Documentation

## Example for Centring in PCA

### Description

The data come from the INSEE (National Institute of Statistics and Economical Studies). It is an array of widower percentages in relation with the age and the socioprofessional category.

### Usage

    data(veuvage)

### Format

`veuvage` is a list of 2 components.

tab

  is a data frame with 37 rows (widowers) 6 columns (socio-professional categories)

age

  is a vector of the ages of the 37 widowers.

### Details

The columns contain the socioprofessional categories:
1- Farmers, 2- Craftsmen, 3- Executives and higher intellectual professions,
4- Intermediate Professions, 5- Others white-collar workers and 6- Manual workers.

### Source

unknown

### Examples

    data(veuvage)
    par(mfrow = c(3,2))
    for (j in 1:6) plot(veuvage$age, veuvage$tab[,j],
        xlab = "age", ylab = "pourcentage de veufs",
        type = "b", main = names(veuvage$tab)[j])

[Package ade4 version 1.7-16 Index]