[R] Two similar zoo objects with different structures, how to get same structure?

[Gabor Grothendieck]

Please reduce your examples down to small amounts of data and use dput so
that they are reproducible.

On Wed, Jan 21, 2009 at 9:32 AM, Sergey Goriatchev <sergeyg at gmail.com> wrote:
> Dear all,
>
> I have a zoo object that has following structure:
>
>> str(bldata)
>  zoo [1:5219, 1:12] 91.9 91.8 91.7 91.8 91.7 ...
>  - attr(*, "index")=Classes 'dates', 'times'  atomic [1:5219] 7305
> 7306 7307 7308 7309 ...
>  .. ..- attr(*, "format")= chr "m/d/y"
>  .. ..- attr(*, "origin")= Named num [1:3] 1 1 1970
>  .. .. ..- attr(*, "names")= chr [1:3] "month" "day" "year"
>  - attr(*, "dimnames")=List of 2
>  ..$ : NULL
>  ..$ : chr [1:12] "ED4 COMDTY" "ED12 COMDTY" "ER4 COMDTY" "ER12 COMDTY" ...
>
> I also have a vector of dates of same length as zoo object (5219):
>
>> str(bldates)
>  chr [1:5219] "01/01/90" "01/02/90" "01/03/90" "01/04/90" "01/05/90"
> "01/08/90" "01/09/90" "01/10/90" "01/11/90" "01/12/90" ...
>
> I do the following:
>
>> attributes(bldata)[[2]] <- as.Date(bldates, "%m/%d/%y")
>
> and get the following:
>
>> str(bldata)
> 'zoo' series from 1990-01-01 to 2009-12-31
>  Data: num [1:5219, 1:12] 91.9 91.8 91.7 91.8 91.7 ...
>  - attr(*, "dimnames")=List of 2
>  ..$ : NULL
>  ..$ : chr [1:12] "ED4 COMDTY" "ED12 COMDTY" "ER4 COMDTY" "ER12 COMDTY" ...
>  Index: Class 'Date'  num [1:5219] 7305 7306 7307 7308 7309 ...
>
> But what I really want to get is the following:
>
>>str(bldata)
> 'zoo' series from 01/01/90 to 12/31/09
>  Data: num [1:5219, 1:12] 91.9 91.8 91.7 91.8 91.7 ...
>  - attr(*, "dimnames")=List of 2
>  ..$ : NULL
>  ..$ : chr [1:12] "ED4 COMDTY" "ED12 COMDTY" "ER4 COMDTY" "ER12 COMDTY" ...
>  Index: Classes 'dates', 'times'  atomic [1:5219] 7305 7306 7307 7308 7309 ...
>  ..- attr(*, "format")= chr "m/d/y"
>  ..- attr(*, "origin")= Named num [1:3] 1 1 1970
>  .. ..- attr(*, "names")= chr [1:3] "month" "day" "year"
>
> The array bldata is the same, only the last one is on a machine
> running RBloomberg, and then I tried to save bldata (and rownames of
> bldata in bldates) and
> transfer bldata to the other machine which is not a Bloomberg
> terminal, and the structure of bldata changes.
>
> What should I do in this case to adjust the structure? I guess I have
> to somehow change the class of Index and set attributes of "Index" and
> attribute "names" of attribute "origin" of attribute "Index"?
>
> Thank you for your help in advance!
>
> Regards,
> Sergey
>
> --
> I'm not young enough to know everything. /Oscar Wilde
> Experience is one thing you can't get for nothing. /Oscar Wilde
> When you are finished changing, you're finished. /Benjamin Franklin
> Tell me and I forget, teach me and I remember, involve me and I learn.
> /Benjamin Franklin
> Luck is where preparation meets opportunity. /George Patten
>
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