[R] installing caret package

[Duncan Murdoch]

On 12/05/2017 4:21 PM, Elahe chalabi via R-help wrote:
> Hi all,
>
> I'm using Rstudio 64 bit version3.2.5 and I faced a problem installing caret package,the error is :
>
> Loading required package: lattice
> Loading required package: ggplot2
> Error : object ‘sigma’ is not exported by 'namespace:stats'
> Error: package or namespace load failed for ‘caret’

The caret function was introduced in R 3.3.0.  You need to update R to 
be at least as new as that.

You might also let the maintainer of caret know about this; they should 
have "Depends:  R (>= 3.3.0)" or something similar to prevent this kind 
of error.  (But I don't see "sigma" being used in the current source, so 
this may have been addressed already, or the error message may be 
tricking me into looking in the wrong place.)

Duncan Murdoch