Something has changed in the S4 default for coercing. Am I now suppose
to use setAs, or is there something else I should do to make this work:
R version 2.7.0 (2008-04-22)
....
> require("methods")
> setClassUnion("OptionalPOSIXct", c("POSIXct", "NULL"))
[1] "OptionalPOSIXct"
> setClass("TSmetax",
representation(serIDs="character", ExtractionDate="OptionalPOSIXct" ))
[1] "TSmetax"
> setGeneric("TSmetax", def= function(x, ...) standardGeneric("TSmetax"))
[1] "TSmetax"
> setMethod("TSmetax", signature(x="character"), definition=
function(x, ...){
new("TSmetax", serIDs=x, ExtractionDate=Sys.time()) } )
[1] "TSmetax"
> z <- new("TSmetax", serIDs="whatever", ExtractionDate= Sys.time())
Error in as(slotVal, slotClass, strict = FALSE) :
no method or default for coercing "POSIXt" to "OptionalPOSIXct"
(It did work in R-2.6.2.)
Paul
====================================================================================
La version française suit le texte anglais.
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