Or, without removing the first line
dadf <- read.table("xxx.txt", stringsAsFactors=FALSE, skip=1)
Another alternative,
dadf$datetime <- as.POSIXct(paste(dadf$V1,dadf$V2))
since the dates appear to be in the default format.
(I generally prefer to work with datetimes in POSIXct class rather than POSIXlt
class)
-Don
--
Don MacQueen
Lawrence Livermore National Laboratory
7000 East Ave., L-627
Livermore, CA 94550
925-423-1062
Lab cell 925-724-7509
On 7/30/18, 4:03 PM, "R-help on behalf of Jim Lemon"
<r-help-boun...@r-project.org on behalf of drjimle...@gmail.com> wrote:
Hi Diego,
You may have to do some conversion as you have three fields in the
first line using the default space separator and five fields in
subsequent lines. If the first line doesn't contain any important data
you can just delete it or replace it with a meaningful header line
with five fields and save the file under another name.
It looks as thought you have date-time as two fields. If so, you can
just read the first field if you only want the date:
# assume you have removed the first line
dadf<-read.table("xxx.txt",stringsAsFactors=FALSE
dadf$date<-as.Date(dadf$V1,format="%Y-%m-%d")
If you want the date/time:
dadf$datetime<-strptime(paste(dadf$V1,dadf$V2),format="%Y-%m-%d %H:%M:%S")
Jim
On Tue, Jul 31, 2018 at 12:29 AM, Diego Avesani <diego.aves...@gmail.com>
wrote:
> Dear all,
>
> I am dealing with the reading of a *.txt file.
> The txt file the following shape:
>
> 103001930 103001580 103001530
> 1998-10-01 00:00:00 0.6 0 0
> 1998-10-01 01:00:00 0.2 0.2 0.2
> 1998-10-01 02:00:00 0.6 0.2 0.4
> 1998-10-01 03:00:00 0 0 0.6
> 1998-10-01 04:00:00 0 0 0
> 1998-10-01 05:00:00 0 0 0
> 1998-10-01 06:00:00 0 0 0
> 1998-10-01 07:00:00 0.2 0 0
>
> If it is possible I have a coupe of questions, which will sound stupid but
> they are important to me in order to understand ho R deal with file or
date.
>
> 1) Do I have to convert it to a *csv file?
> 2) Can a deal with space and not ","
> 3) How can I read date?
>
> thanks a lot to all of you,
> Thanks
>
>
> Diego
>
> [[alternative HTML version deleted]]
>
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______________________________________________
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______________________________________________
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PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
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