[R] Conversion problem with write.csv and as.character()

[Jim Lemon]

Hi Peter,
Have you tried:

a_fetchdata<-format(a_fetchdata,"%Y-%m-%d %H:%M:%S")

before writing the data?

Jim

On Thu, Mar 10, 2016 at 10:14 PM, Peter Neumaier
<peter.neumaier at gmail.com> wrote:
> Hi all, sorry for double/cross posting, I have sent an initial, similar
> question
> accidentally to r-sig-finance.
>
> I am writing a matrix (typeof = double) into a CSV file with write.csv.
>
> My first column of the matrix is a date in the form yyyy-mm-dd hh:mm:ss:
>
>> a_fetchdata[1,0]
>
> 2016-02-09 07:30:00
>> typeof(a_fetchdata[1,0])
> [1] "double"
>
> My CSV file contains a sequence of integers (from 1 to x) instead of the
> expected date.
>
> I tried to convert, but ran into "Error in dimnames":
>
>> as.character(first_fetchdata[1,0])
> Error in dimnames(cd) <- list(as.character(index(x)), colnames(x)) :
>   'dimnames' applied to non-array
> Called from: as.matrix.xts(x)
> Browse[1]> c
>>
>
> a) How can I prevent the conversion into integers to happen when writing
> into CSV?
> b) if a) is not do-able: how can I convert the date in double format to
> chars (i.e. with as.character) ?
>
> Thanks in advance,
> Peter
>
>         [[alternative HTML version deleted]]
>
> ______________________________________________
> R-help at r-project.org mailing list -- To UNSUBSCRIBE and more, see
> https://stat.ethz.ch/mailman/listinfo/r-help
> PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
> and provide commented, minimal, self-contained, reproducible code.