R help - Jan 2008 - Error with rbind and zoo

Hi all:

I have a directory of files as in -------------> bunchafiles <-
list.files(path="/data/2.3/2006", pattern="returns",
full.names=T,recursive=T)  .... Each file is a bunch of returns for a
particular date (unique). There are like 252 files or so.

With a custom function myread (below), I define a vector ----- res <-
vector("list",length=length(bunchafiles)) , and read files into it
----
res <- lapply(bunchafiles, myread)

myread <- function (x) {
  y <- read.csv(x, as.is=T, header=T)
  if (nrow(y) > 0) {
    quotedate <-
strsplit(strsplit(x,"/",fixed=T)[[1]][11],".",fixed=T)[[1]][1]
    a <- rep(quotedate, nrow(y))
    y <- zoo(y,a)
  }
  return(y)
}

I now have a list of zoo'd files. Each of them is indexed by a date
which is unique. All fine so far.

Now, I want to combine all of these into one large zoo object. So I say
------  bigzoo <- do.call(rbind, res)

I now get an error .... "rbind(...): indexes overlap"... I am now
wondering how? Because when I do the foll -----  for (i in
1:length(res)) {cat(i," ",unique(index(res[i][[1]])),"\n")}
I see that I have unique indexes for each res.... So why is rbind
behaving thus?
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On Jan 7, 2008 7:09 PM, Kondamani, Arjun (GMI - NY Corporate Bonds)
<arjun_kondamani at ml.com> wrote:
> Hi all:
>
> I have a directory of files as in -------------> bunchafiles <-
> list.files(path="/data/2.3/2006", pattern="returns",
> full.names=T,recursive=T)  .... Each file is a bunch of returns for a
> particular date (unique). There are like 252 files or so.
>
> With a custom function myread (below), I define a vector ----- res <-
> vector("list",length=length(bunchafiles)) , and read files into
it ----
> res <- lapply(bunchafiles, myread)
>
> myread <- function (x) {
>  y <- read.csv(x, as.is=T, header=T)
>  if (nrow(y) > 0) {
>    quotedate <-
>
strsplit(strsplit(x,"/",fixed=T)[[1]][11],".",fixed=T)[[1]][1]
>    a <- rep(quotedate, nrow(y))
>    y <- zoo(y,a)
>  }
>  return(y)
> }
>
> I now have a list of zoo'd files. Each of them is indexed by a date
> which is unique. All fine so far.
>
> Now, I want to combine all of these into one large zoo object. So I say
> ------  bigzoo <- do.call(rbind, res)
>
> I now get an error .... "rbind(...): indexes overlap"... I am now
> wondering how? Because when I do the foll -----  for (i in
> 1:length(res)) {cat(i,"
",unique(index(res[i][[1]])),"\n")}
> I see that I have unique indexes for each res.... So why is rbind
> behaving thus?
> --------------------------------------------------------
>
> This message w/attachments (message) may be privileged, confidential or
proprietary, and if you are not an intended recipient, please notify the sender,
do not use or share it and delete it. Unless specifically indicated, this
message is not an offer to sell or a solicitation of any investment products or
other financial product or service, an official confirmation of any transaction,
or an official statement of Merrill Lynch. Subject to applicable law, Merrill
Lynch may monitor, review and retain e-communications (EC) traveling through its
networks/systems. The laws of the country of each sender/recipient may impact
the handling of EC, and EC may be archived, supervised and produced in countries
other than the country in which you are located. This message cannot be
guaranteed to be secure or error-free. This message is subject to terms
available at the following link: http://www.ml.com/e-communications_terms/. By
messaging with Merrill Lynch you consent to the foregoing.
> --------------------------------------------------------
>
>        [[alternative HTML version deleted]]
>
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