[R] Converting data frame to zoo

[Horace Tso]

Thanks Gabor. I figured out what went wrong. The culprit turns out to be
the headers in my data. read.zoo doesn't recognize column headers and
complains 

Error in read.zoo("C:\\.......\\table.csv",  : 
        index contains NAs

Or is there an option as in read.table(x, header=...) ? 

After the header line is removed it works fine.

H.



>>> "Gabor Grothendieck" <ggrothendieck at gmail.com> 7/7/2006 10:22 AM
>>>
Check out read.zoo in the zoo package.

On 7/7/06, Horace Tso <Horace.Tso at pgn.com> wrote:
> Dear list,
>
> I know this is really basic question but I just couldn't get
anything
> to work. (I did a R site search with keywords "zoo" and "data frame"
but
> the server timed out on me.)
>
> I have a time series which has the following (typical) format,
>
> DATE               Open          High          Low          Close
>  Volume
> 01-JAN-2006     5.25           5.25          5.25          5.25
>  256
> ....
>
> I read the data in from a csv file with read.csv() and it defaulted
to
> a data frame which I thought is fine. Now I want to convert it to zoo
so
> I did
>
> x <- zoo(my.df)
>
> which works just fine. But the Date column has been turned into a
> factor. Is there a way to make it into a Date. I've tried,
>
> x$Date <- as.Date(x$Date)
>
> but R complains that
>
> Error in fromchar(x) : character string is not in a standard
> unambiguous format
>
> Thanks in advance.
>
> Horace W. Tso
>
>
>
>
>
>
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