t; afun(matrix(1L,nc=1))
integer 1
> afun.fooey <- function(x) NextMethod()
> my.mat <- matrix(1L,nc=1)
> afun(my.mat)
matrix 1
> class(my.mat) <- "fooey"
> afun(my.mat)
Error in NextMethod() : no method to invoke
>
> Anyway, an update to ?UseMethod would be welc
qrls",
> fittt$coefficients also equals to c(1,1). That means the .Fortran("dqrls",
> qr=qr,n=n,p=p,...) did nothing to the coefficients! I don't know why, is
> there anything I did wrong or missed? How can I get the result from "dqrls"
> as what
John C Nash writes:
> This message is about a curious difference in timing between two ways of
> computing the
> same function. One uses expm, so is expected to be a bit slower, but "a bit"
> turned out to
> be a factor of >1000. The code is below. We would be grateful if anyone can
> point ou
