[R] package Formula????

[Achim Zeileis]

On Fri, 11 Mar 2016, CHIRIBOGA Xavier wrote:

> Dear all, again me
>
>
> I have already updated my version of R. But still appears this message:
>
>
> plot(ctree(Surv(hours,state)~soil+volatile, data=data))
> Error in loadNamespace(name) : there is no package called 'Formula'
>
>
> I cannot find a package "Formula" in my list of packages. What to do in that case?

As you were instructed yesterday: Simply install the package "Formula". 
You can do this in R on the command line

install.packages("Formula")

or using the graphical user interface if you are using one...

>
> Thank you,
>
> Xavier
>
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