[R] $ opetator is invalid for atomic vectors

Rui Barradas ru|pb@rr@d@@ @end|ng |rom @@po@pt
Mon Feb 24 14:03:47 CET 2020


If you are using function resamples from package caret, just read its 
help page. From ?resamples, section Arguments:


a list of two or more objects of class train, sbf or rfe with a common 
set of resampling indices in the control object. For sort.resamples, it 
is an object generated by resamples.

Your x argument is not an object of one of those classes. You are 
passing the function a list of 2 numeric values, not an object 
resembling the examples in that help page.

Hope this helps,

Rui Barradas

Às 11:35 de 24/02/20, javed khan escreveu:
> Hello
> I am using genetic algorithm for some optimization problem. I executed it
> with 2 types of data and get results like
> GA=40
> GA2=60
> When I combine it with resamples
> Value=resamples (list (GA, GA2))
> It gives me the error
> $ operator is invalid for atomic vectors.
> What should be the issue here?
> Thanks
> 	[[alternative HTML version deleted]]
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