[R] Extracting formulae from expression() / deriv()

[Henrique Dallazuanna]

Post your f1 function to us

On Tue, Apr 6, 2010 at 10:23 AM, nickymcp <nickymcpherson at gmail.com> wrote:
>
>> attributes(eval(df1p))$gradient[,'P']
> Error in eval(expr, envir, enclos) : object 's' not found
>
>
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-- 
Henrique Dallazuanna
Curitiba-Paraná-Brasil
25° 25' 40" S 49° 16' 22" O