[R] error using lapply with oneway_test (coin package)

[Torsten Hothorn]

>
> That's a scoping problem, I think a bug in oneway_test.  Because the formula 
> var ~ group is created with the anonymous function within lapply, its 
> environment should be the evaluation frame of that function call and var 
> should be visible.  If I replace oneway_test() with lm() it works.
>
> I think a workaround is to construct the data argument explicitly, i.e.
>
> lapply(y, function(var) oneway_test(var ~ group, data.frame(var=var, 
> group=group)))
>

yes, that would be the fix:

R> lapply(y, function(var) oneway_test(var ~ group,
           data = data.frame(var = var, group = group)))
$V1

 	Asymptotic 2-Sample Permutation Test

data:  var by group (1, 2)
Z = -1.2054, p-value = 0.2280
alternative hypothesis: true mu is not equal to 0


$V2

 	Asymptotic 2-Sample Permutation Test

data:  var by group (1, 2)
Z = 0.5672, p-value = 0.5706
alternative hypothesis: true mu is not equal to 0

Thanks, Duncan.

Torsten


> I've cc'd Torsten Hothorn, the maintainer of coin.
>
> Duncan Murdoch
>
>> 
>> Thank you,
>> 
>> Matthieu
>> 
>> Matthieu Dubois
>> Post-doctoral fellow
>> 
>> Psychology and NeuroCognition Lab (CNRS UMR 5105)
>> Université Pierre Mendès-France
>> BP47 --- 38040 Grenoble Cedex 9 --- France
>> 
>> Email: matthieu.dubois at upmf-grenoble.fr
>> Gmail: matthdub at gmail.com
>> http://web.upmf-grenoble.fr/LPNC/membre_matthieu_dubois
>> 
>> 
>> 
>> 
>>
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>> 
>> 
>> 
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>