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90 dudi.nsc<br />

dudi.nsc<br />

Non symmetric correspondence analysis<br />

Description<br />

performs a non symmetric correspondence analysis.<br />

Usage<br />

dudi.nsc(df, scannf = TRUE, nf = 2)<br />

Arguments<br />

df<br />

scannf<br />

nf<br />

a data frame containing positive or null values<br />

a logical value indicating whether the eigenvalues bar plot should be displayed<br />

if scannf FALSE, an integer indicating the number of kept axes<br />

Value<br />

Returns a list of class nsc and dudi (see dudi) containing also<br />

N<br />

sum of the values of the initial table<br />

Author(s)<br />

Daniel Chessel<br />

Anne B Dufour 〈dufour@biomserv.univ-lyon1.fr〉<br />

References<br />

Kroonenberg, P. M., and Lombardo R. (1999) Nonsymmetric correspondence analysis: a tool for<br />

analysing contingency tables with a dependence structure. Multivariate Behavioral Research, 34,<br />

367–396.<br />

Examples<br />

data(housetasks)<br />

nsc1

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