On Tue, 2009-04-07 at 09:47 -0400, ryan.shef...@malbecpartners.com
wrote:
> I am trying to use the "cast" function from the reshape package, where the
> formula is not passed in directly, but as the result of the as.formula()
> function.
>
> Using reshape v. 0.7.2
>
> I am able to properly melt() by data with:
>
> > molten <- melt(x, id=1:2)
>
> then I can properly cast with this:
>
> > cast(molten, days ~ variable)
>
> but if I try
>
> > cast(molten, as.function("days ~ variable"))
^^^^^^^^^
Did you really use as.function not as.formula as you claim or is this a
typo in composing this posting? If this is what you typed, that may well
be the source of the error.
HTH
G
>
> if returns the error:
>
> Error in check_formula(formula, varnames) :
> Formula contains variables not in list of known variables
>
> I am not sure if the problem is with cast or as.formula()
>
> I did confirm that:
>
> > x <- days ~ variable
>
> > y <- as.formula("days ~ variable")
>
> > x==y
> TRUE
>
>
> [[alternative HTML version deleted]]
>
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Dr. Gavin Simpson [t] +44 (0)20 7679 0522
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