[R] Failure to aggregate

[Gabor Grothendieck]

On Wed, Sep 8, 2010 at 4:48 AM, Dimitri Shvorob
<dimitri.shvorob at gmail.com> wrote:
>
> I was able to aggregate (with sqldf, at least), after saving and re-loading
> the dataframe. My first guess was that h (and/or price?) now being a factor
> - stringsAsFactors = T by default - made the difference, and I tried to
> convert x$h to factor, but received an error.

Please provide enough of x to reproduce your problem.  e.g.

x <- head(x)
dput(x)
# repeat code and ensure it still shows problem

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