2.1 User functions

Several user functions are available to create a simple graph (stored as an ADEg object in R). Each function creates an object of a given class (see Figure 1). Table 1 lists the different functions, their corresponding classes and a short description. The ade4 users would not be lost: many functions have kept their names in adegraphics. The main changes are listed in Table 2.

Table 1: Graphical functions available in adegraphics

Table 2: Changes in functions names between ade4 and adegraphics

2.2 Arguments

The list of arguments of a function are given by the args function.

library(ade4)
library(adegraphics)

## The legacy packages maptools, rgdal, and rgeos, underpinning the sp package,
## which was just loaded, will retire in October 2023.
## Please refer to R-spatial evolution reports for details, especially
## https://r-spatial.org/r/2023/05/15/evolution4.html.
## It may be desirable to make the sf package available;
## package maintainers should consider adding sf to Suggests:.
## The sp package is now running under evolution status 2
##      (status 2 uses the sf package in place of rgdal)

## Registered S3 methods overwritten by 'adegraphics':
##   method         from
##   biplot.dudi    ade4
##   kplot.foucart  ade4
##   kplot.mcoa     ade4
##   kplot.mfa      ade4
##   kplot.pta      ade4
##   kplot.sepan    ade4
##   kplot.statis   ade4
##   scatter.coa    ade4
##   scatter.dudi   ade4
##   scatter.nipals ade4
##   scatter.pco    ade4
##   score.acm      ade4
##   score.mix      ade4
##   score.pca      ade4
##   screeplot.dudi ade4

## 
## Attachement du package : 'adegraphics'

## Les objets suivants sont masqués depuis 'package:ade4':
## 
##     kplotsepan.coa, s.arrow, s.class, s.corcircle, s.distri, s.image,
##     s.label, s.logo, s.match, s.traject, s.value, table.value,
##     triangle.class

args(s.label)

## function (dfxy, labels = rownames(dfxy), xax = 1, yax = 2, facets = NULL, 
##     plot = TRUE, storeData = TRUE, add = FALSE, pos = -1, ...) 
## NULL

Some arguments are very general and present in all user functions:

• plot: a logical value indicating if the graph should be displayed

• storeData: a logical value indicating if the data should be stored in the returned object. If FALSE, only the names of the data are stored. This allows to reduce the size of the returned object but it implies that the data should not be modified in the environment to plot again the graph.

• add: a logical value indicating if the graph should be superposed on the graph already displayed in the current device (it replaces the argument add.plot in ade4).

• pos: an integer indicating the position of the environment where the data are stored, relative to the environment where the function is called. Useful only if storeData is FALSE.

• …: additional graphical parameters (see below)

Some other arguments influence the graphical outputs and t