Ah! Ok....thanks very much!
Sincerely,
Erin
On Fri, Jan 9, 2015 at 1:09 PM, Richard M. Heiberger <r...@temple.edu> wrote:
> `[` is a function. So the deriv program is seeing
>
> `[`(y,3)*r1 + r2
>
> > letters[5]
> [1] "e"
> > `[`(letters, 5)
> [1] "e"
>
> On Fri, Jan 9, 2015 at 12:31 PM, Erin Hodgess <erinm.hodg...@gmail.com>
> wrote:
> > Hello!
> >
> > I have the following:
> >
> > zzz <- expression(y[3]*r1 + r2)
> > deriv(zzz,c("r1","r2"))
> > Error in deriv.default(zzz,c("r1","r2")) :
> > Function '`[`' is not in the derivatives table
> >
> > What am I missing, please? Since y is not one of the variables that is
> > being "acted upon", why is the [] an issue, please?
> >
> > Thank you for any help!
> >
> > Sincerely,
> > Erin
> >
> >
> > --
> > Erin Hodgess
> > Associate Professor
> > Department of Mathematical and Statistics
> > University of Houston - Downtown
> > mailto: erinm.hodg...@gmail.com
> >
> > [[alternative HTML version deleted]]
> >
> > ______________________________________________
> > R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see
> > https://stat.ethz.ch/mailman/listinfo/r-help
> > PLEASE do read the posting guide
> http://www.R-project.org/posting-guide.html
> > and provide commented, minimal, self-contained, reproducible code.
>
--
Erin Hodgess
Associate Professor
Department of Mathematical and Statistics
University of Houston - Downtown
mailto: erinm.hodg...@gmail.com
[[alternative HTML version deleted]]
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PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
and provide commented, minimal, self-contained, reproducible code.
