[R] FORTRAN in R

[Thomas Lumley]

On Fri, 17 Aug 2001, Ko-Kang Kevin Wang wrote:

> I have tried leaps and it kind of works.
>
> However when I tried to make it displays the variables' names instead of
> displaying 1 2 3 4..., I got some error messages.
>
> Suppose I have a data frame called myData.  There are 5 variables (H, L,
> S, W, M), where M is the response variable and all the others are
> explanatory variables.
>
> I extracted M out from myData, and call the new data frame (without M) X.
>
> Then I tried:
>  leaps( X, M, names=names(X) )
>    Error in leaps(X, M, names = names(X)) : couldn't find function
>    "col.names<-"
>
> If I do
>   leaps( X, M )
> then it works but columns in $which is displayed as 1 2 3 4 instead of H L
> S W.
>
> I also tried to use names=list(names(X)) but it still doesn't work.
>
> Helps will be appreciated ;-)
>

leaps() has an option 'strictly.compatible' that is by default TRUE and as
the help page says,
         With `strictly.compatible=T' the function will stop
        with an error if `x' is not of full rank or if it has
        more than 31 columns. It will ignore the column names
        of `x' even if `names==NULL' and will replace them with
        "0" to "9", "A" to "Z".

So you need to set strictly.compatible=FALSE to use the names= option.


	-thomas

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