inertia.wwm: Additional aids to interpretation of Double Intra...

In pamctdp: Principal Axes Methods for Contingency Tables with Partition Structures on Rows and Columns

Description

Aids to interpretation associated to subclouds in Double Intra Correspondence Analysis (ICA, IBCA, ...). Square distances to the origin of rows and columns

Usage

      ## S3 method for class 'wwm'
inertia(x, xax=1,yax = 2,dec=1,ti=1000, ...)
      ## S3 method for class 'wwinertia'
print(x, ...)   
    

Arguments

x	object of class wwmodel (in the inertia method) or wwinertia (in the print method)
xax	the axis number of x
yax	the axis number of y
dec	number of decimal digits in $fil and $col
ti	the inertia values are multiplied by ti
...	further arguments passed to or from other methods

Details

Aids to interpretation associated to the bands. There are J column bands and L row bands.

Value

Returns a list of class wwinertia containing:

cloud.col	column band weights
cloud.row	row band weights
rel.col	column band qualities of the representation
rel.row	row band qualities of the representation
abs.col	column band absolute contributions
abs.row	row band absolute contributions
col	a table of inertia for the column clouds. The inertia values are multiplied by ti
row	a table of inertia for the row clouds. The inertia values are multiplied by ti
coraxisJ	a data frame giving the correlations between the axis separate and global analysis for column bands
coraxisL	a data frame giving the correlations between the axis separate and global analysis for row bands
dis.row	square distances of rows to the origin
dis.col	square distances of columns to the origin

Author(s)

Campo Elias PARDO [e-mail]

References

Becue M., Pages J. and Pardo C.E. (2005). Contingency table with a double partition on rows and columns. Visualization and comparison of the partial and global structures. In: Proceedings ASMDA, Brest, France. May,17-20, 2005. Eds: Jacques Janssen and Philippe Lenca. ENST Bretagne. pages 355–364. http://conferences.telecom-bretagne.eu/asmda2005/IMG/pdf/proceedings/355.pdf

Cazes, P., Chessel, D. and Doledec, S. (1988) L'analyse des correspondances internes d'un tableau partitionn? : son usage en hydrobiologie. Revue de Statistique Appliquee, 36, 39–54.

Pardo Campo Elias (2005). Analisis de correspondencias de tablas de contingencia estructuradas. In: Memorias del Coloquio Distrital de Matematicas y Estadistica. Volume 7. Universidad Distrital, Bogota http://www.docentes.unal.edu.co/cepardot/docs/ColoquioDistritalMatEst/AnalCorresTCE.pdf

Examples

data(ardeche)
# change column names
names(ardeche$tab) <- paste(ardeche$sta.fac,ardeche$dat.fac,sep="") 
rownames(ardeche$tab) <- # change row names
paste(strtrim(rownames(ardeche$tab),1),substr(rownames(ardeche$tab),4,
	length(rownames(ardeche$tab))),sep="")
coa1 <- dudi.coa(ardeche$tab, scann = FALSE, nf = 4)
ww <- witwit.model(coa1, ardeche$row.blocks, ardeche$col.blocks, scann = FALSE)
aids <- inertia(ww) 
aids$col
aids$row

pamctdp documentation built on May 1, 2019, 10:19 p.m.