[R] how to slice a zoo object

[Blair Sutton]

My previous post had a typo. So as not to confuse future readers of
the list it should have read  ZOO_OBJ[,cbind("COL2", "COL5")].

Thanks Gabor.

On Mon, Jan 24, 2011 at 10:54 AM, Blair Sutton <blairuk at gmail.com> wrote:
> I've solved my own problem using ZOO_OBJ[,"COL2", "COL5"]. The trick
> was preceding the list of names with a comma as described in the
> standard ts document.
>
> On Mon, Jan 24, 2011 at 9:51 AM, Blair Sutton <blairuk at gmail.com> wrote:
>> Hi
>>
>> Would anyone have any pointers on how to slice up a large zoo table. I
>> have the following structure: -
>>
>>> str(ZOO_OBJ)
>>  zoo [1:632, 1:83] 30.4 30.4 30.4 30.4 30.3 ...
>>  - attr(*, "dimnames")=List of 2
>>   ..$ : NULL
>>   ..$ : chr [1:83] "COL1" "COL2" "COL3" "COL4" ...
>>  - attr(*, "index")= POSIXct[1:632], format: "2009-05-01 01:00:00"
>> "2009-05-02 01:00:00" ...
>>
>> and I would just like to take only arbitrary columns, i.e. another zoo
>> object with only the columns "COL2", "COL5", etc..
>>
>> I've tried various syntactical combinations such as those for
>> data.frames and also tried manipulating the coredata(). What would be
>> nice would be the ability to do this by column names and not their
>> indexes.
>>
>> Any help appreciated and thanks in advance,
>> Blair
>>
>