[R] Convert Long DOY time format to yyyymmdd hh format: Problem Fixed

[Ogbos Okike]

Dear Gurus,
I am so happy to thank you all for your great help!!!
Jim's code first did it.
Thanks again to everyone.
Warmest regards
Ogbos
On Thu, Jan 23, 2020 at 10:42 AM Jim Lemon <drjimlemon using gmail.com> wrote:
>
> Hi Ogbos,
> Try this:
>
> oodates<-read.table(text="1963 335 0
> 1963 335 1
> 1963 335 2
> 1963 335 3
> 1963 335 4
> 1963 335 5
> 1963 335 6
> 1963 335 7
> 1963 335 8
> 1963 335 9
> 1996 202 20
> 1996 202 21
> 1996 202 22
> 1996 202 23
> 1996 203 0
> 1996 203 1
> 1996 203 2
> 1996 203 3
> 2018 365 20
> 2018 365 21
> 2018 365 22
> 2018 365 23")
> oodates$Pdate<-strptime(paste(oodates[,1],oodates[,2],oodates[,3]),
>  format="%Y %j %H")
>
> Jim
>
> On Thu, Jan 23, 2020 at 8:24 PM Ogbos Okike <giftedlife2014 using gmail.com> wrote:
> >
> > Dear Experts,
> > I have a data spanning 56 years from 1963 to 2018.
> > The datetime format is in DOY hour:
> > 1963 335 0
> > 1963 335 1
> > 1963 335 2
> > 1963 335 3
> > 1963 335 4
> > 1963 335 5
> > 1963 335 6
> > 1963 335 7
> > 1963 335 8
> > 1963 335 9
> > 1996 202 20
> > 1996 202 21
> > 1996 202 22
> > 1996 202 23
> > 1996 203 0
> > 1996 203 1
> > 1996 203 2
> > 1996 203 3
> > 2018 365 20
> > 2018 365 21
> > 2018 365 22
> > 2018 365 23
> > When I used:
> > as.Date(335,origin="1963-01-01"), for the first row, I got:
> > [1] "1963-12-02"
> > This is the format I want, though it is not yet complete. Time is missing.
> >
> > Again, I can't be doing this one after the other. I guess you have a
> > better way of handling this. I have spent some time trying to get it
> > right but I am really stuck. I would be most glad if you could spare
> > your busy time to help me again.
> >
> > Thank you very much for your usual kind assistance.
> >
> > Best regards
> > Ogbos
> >
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