[R] replacement and extraction functions

[Eusebio Arenal Gutiérrez]

Is there any documentation about replacement and extraction functions in R,
these fuenctions don't work as in S.

Example with funtion factor.names (of S+ 4.5r2)

> fnombres <- list(tratamiento=LETTERS[1:4], veneno=c("I","II","III"))
> veneno.diseno <- data.frame(
+ factor(rep(c(1,2,3,4), rep(12,4))),
+ factor(rep(rep(c(1,2,3), rep(4,3)),4))
+ )

> factor.names(veneno.diseno) <- fnombres
Error in factor.names<-(*tmp*, value = structure(list(tratamiento = c("A",
: unused argument to function

but the following works

> veneno.diseno <- "factor.names<-"(veneno.diseno, fnombres)

Thanks for the help

*************************************************************
*                 Eusebio Arenal Gutiérrez                  *
*   Departamento de Estadística e Investigación Operativa   *
*      _\|/_      Universidad de Valladolid                 *
*      (o o)               España                           *
*---oOO-(_)-OOo-----------------------------------,,,-------*
*                      use at eio.uva.es            (o o)      *
*---------------------------------------------oOO-(_)-OOo---*
*                 Eusebio Arenal Gutiérrez                  *
*     Department of Statistics and Operational Research     *
*                 University of Valladolid                  *
*                           Spain                           *
*************************************************************



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