[R] [<- and indexing for zoo objects

[Brandt, T. (Tobias)]

Hi
 
I've been greatly enjoying the functionality the zoo package offers.
However I've hit a snag with the following code
 
> a <- zoo(matrix(1:10,5,2), 2001:2005)
> a
          
2001  1  6
2002  2  7
2003  3  8
2004  4  9
2005  5 10
> a[I(2003), 2]
      
2003 8
> a[I(2003), 2] <- NA
Error: subscript out of bounds
> 

I've also tried
 
> coredata(a[I(2003), 2]) <- NA
Error: subscript out of bounds
> 
 
but that doesn't work either.  I can of course do
 
> ix <- which(index(a)==2003)
> a[ix, 2] <- NA
> a
          
2001  1  6
2002  2  7
2003  3 NA
2004  4  9
2005  5 10
> 

which gives me the desired result but I feel that a timeseries class should
really be able to handle the first syntax since with the workaround I'm back
to the way of doing things before I had timeseries objects.
 
Am I missing something or any comments?
 

Regards

Tobias Brandt
 

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