[R] Rotation Forest Error Message

[Abby Spurdle]

Just re-read your question and realized I misread the error message.
The argument is of zero length.

But the conclusion is the same, either a bug in the package, or a
problem with your input.


On Fri, Aug 21, 2020 at 4:16 PM Abby Spurdle <spurdle.a using gmail.com> wrote:
>
> Note that I'm not familiar with this package or the method.
> Also note that you haven't told anyone what function you're using, or
> what your call was.
>
> I'm assuming that you're using the rotationForest() function.
> According to its help page, the default is:
>
>     K = round(ncol(x)/3, 0)
>
> There's no reason why the default K value should be higher than the
> number of columns, unless:
> (1) There's a bug with the package; or
> (2) There's a problem with your input.
>
> I note that the package is only version 0.1.3, so a bug is not out of
> the question.
> Also, I'm a little surprised the author didn't use integer division:
>
>     K = ncol (x) %/% 3
>
> You could just set K to the above value, and see what happens...
>
>
> On Fri, Aug 21, 2020 at 1:06 PM Sparks, John <jspark4 using uic.edu> wrote:
> >
> > Hi R Helpers,
> >
> > I wanted to try the rotationForest package.
> >
> > I pointed it at my data set and got the error message "Error in if (K >= ncol(x)) stop("K should not be greater than or equal to the number of columns in x") :
> >   argument is of length zero'.
> >
> > My dataset has 3688 obs. of  111 variables.
> >
> > Would a quick adjustment to the default value of K resolve this?
> >
> > If anybody with more experience with the package than me has a general suggestion I would appreciate it.
> >
> > --John Spaarks
> >
> >
> >         [[alternative HTML version deleted]]
> >
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