On Mon, 6 Jun 2005, Andy Bunn wrote:
R > w <- list(rnorm(10), rnorm(10))
R > x <- ts(w, start = 1980)
Even though you don't get an error message this statement is
erroneous. ?ts discusses the valid possibilities.
So it does, might I suggest add something like this to ts:
if (is.list(data))
stop("Data must be a numeric vector or matrix")
Actually, that is not quite the case: logical time series are allowed,
even through not documented to be allowed. (The S4 methods start-up code
generates one, and so a similar check which was once there was removed.)
--
Brian D. Ripley, [EMAIL PROTECTED]
Professor of Applied Statistics, http://www.stats.ox.ac.uk/~ripley/
University of Oxford, Tel: +44 1865 272861 (self)
1 South Parks Road, +44 1865 272866 (PA)
Oxford OX1 3TG, UK Fax: +44 1865 272595
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