[R] Problem with xtabs(), exclude=NULL, and counting NA's

[Mark Difford]

>> I must say that this is slightly odd behavior to require both
>> na.action= AND exclude=.  Does anyone know of a justification?

Not strange at all.

?options

na.action, sub head "Options set in package stats." You need to override the
default setting.


ws-7 wrote:
> 
>>> xtabs(~wkhp, x, exclude=NULL, na.action=na.pass)
>> wkhp
>>  20   30   40   45   60 <NA>
>>   1    1   10    1    3    4
> 
> Thanks!  I must say that this is slightly odd behavior to require both
> na.action= AND exclude=.  Does anyone know of a justification?
> Shouldn't it be changed?  <vent> Ah well, if R were internally
> consistent or corresponded to typical programming Unix practices, it
> just wouldn't feel the same ... </vent>
> 
> Cheers!
> 
>> --
>> David Winsemius, MD
>> Heritage Laboratories
>> West Hartford, CT
>>
>>
> 
> ______________________________________________
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> 

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