Although I'm not sure what you're talking about with pop-up windows...

Weird, this is what I'm getting in either R 2.13.0 or R 2.12.0:

> library(zoo)
Warning: package 'zoo' was built under R version 2.13.1
> x = zoo(1:5, as.Date('2001-01-01')+1:5)
> x[as.Date('2001-01-05')]
2001-01-05
         4
> x[as.Date('2001-01-05')] = 0
> x
Error in dimnames(x) <- dn :
  length of 'dimnames' [1] not equal to array extent
>
>


Thank you for any insight


On Mon, Aug 29, 2011 at 1:53 PM, David Winsemius <dwinsemius@comcast.net>wrote:

>
> On Aug 29, 2011, at 2:45 PM, Gene Leynes wrote:
>
>  Why doesn't this work?
>>
>> x = zoo(1:5, as.Date('2001-01-01')+1:5)
>> x[as.Date('2001-01-05')]
>> x[as.Date('2001-01-05')] = 0
>> x
>>
>>
>> I think this is especially bad because it doesn't cause an error.  It lets
>> you do something to x, but then you can't see x again to see what it did.
>>
>
> It did exactly what I expected it to do. What was the "this" that you think
> was bad? I hope you are not asking that R ask users to confirm every
> assignment with a popup window.
>
> --
>
> David Winsemius, MD
> West Hartford, CT
>
>

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