[R] array() misfeature

Ben Bolker bolker at ufl.edu
Sun Dec 2 19:31:09 CET 2007




Duncan Murdoch-2 wrote:
> 
> On 02/12/2007 11:49 AM, Allen McIntosh wrote:
>> Version: 2.5.1
> 
> That's an obsolete version, but the issue is still present in R-devel.
> 
>> array() is inconsistent when given non-integral dimensions:
>> 
>>> zz <- array(0,dim=c(4,3.01))
>>> dim(zz)
>> [1] 4 3
>>> zz <- array(0,dim=c(201,4.05))
>> Error in dim(data) <- dim : dim<- : dims [product 804] do not match the
>> length of object [814]
>> 
>> 
>> [IMHO the code that did this is broken.  My copy of it has been
>> fixed.  Consistent behavior and/or a clearer error message would
>> just have made it easier to find the problem.]
>> 
> 
> I'll add code to coerce dim to integer before using it.  Thanks for the 
> report.
> 
> Duncan Murdoch
> 
> 

  While you're at it could you fix a trivial typo in ?dim   ?

  in the description of the value argument: "... or a numeric
vector which [is] coerced ..."
 (I would also say that either there should be a comma after
"vector" or "which" should be changed to "that", but never mind ...)

  Ben

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