>From the help page:
formula: a formula of the form 'z ~ x * y | g1 * g2 * ...', where 'z'
is a numeric response, and 'x, y' are numeric values
evaluated on a rectangular grid.
Please explain why you think that acting as documented necessitates a bug
report?
On Mon, 22 Dec 2003 [EMAIL PROTECTED] wrote:
> R 1.8.1:
>
> ___COMMAND____________________________________________
>
> levelplot( yield ~ year * variety | site, barley )
>
>
> ___ERROR_MESSAGE______________________________________
>
> Error in Summary.factor(..., na.rm = na.rm) :
> "min" not meaningful for factors
>
> ___COMMENT____________________________________________
>
> levelplot( yield ~ as.numeric(year) * as.numeric(variety) | site, barley )
> is working but the labels are nasty.
>
> Best regards
> Wolfram
>
> ______________________________________________
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> https://www.stat.math.ethz.ch/mailman/listinfo/r-devel
>
>
--
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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