Hello !
there's a S3 method called start (and end too) to be used with objects of
class ts (package stats). I am writing a S4 class for which I would like to
use this function start, so that start with a ts calls the former method and
start with my S4 class (called MA) calls the function I want.
For the 'plot' command I do :
setGeneric("plot",function(x,y,...) standardGeneric("plot"))
and
setMethod("plot",signature(x="MA",y="ANY"),function(x,y,...)
plotMA(x,y,...))
and it works just fine.

When I try this with start, I does not work at all : the old function and
the new do not work. I get an error during the check and when I execute
commands, the error is like evaluations are too deeply nested (I'm not sure
of the translation).

I've tried to look for information (in mailing lists, WRE, Rlang,...), but
i'm kinda lost... Any help appreciated !

Thanks

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