[R] Date Conversion Problem

Eric Berger er|cjberger @end|ng |rom gm@||@com
Wed Aug 12 17:22:16 CEST 2020


nice

On Wed, Aug 12, 2020 at 6:18 PM Bert Gunter <bgunter.4567 using gmail.com> wrote:

> Extra packages are not needed.
>
> My question is: why change the character representation at all?  See the
> format argument of ?as.Date.
>
> > as.Date("20010102",format="%Y%m%d")
> [1] "2001-01-02" ## the default format for the print method for Date
> objects
>
>
> Bert Gunter
>
> "The trouble with having an open mind is that people keep coming along and
> sticking things into it."
> -- Opus (aka Berkeley Breathed in his "Bloom County" comic strip )
>
>
> On Wed, Aug 12, 2020 at 8:07 AM Eric Berger <ericjberger using gmail.com> wrote:
>
>> library(lubridate)
>> a <- "20200403"
>> lubridate::ymd(a)
>> # 2020-04-03
>>
>> HTH,
>> Eric
>>
>>
>> On Wed, Aug 12, 2020 at 5:57 PM Stephen P. Molnar <s.molnar using sbcglobal.net
>> >
>> wrote:
>>
>> > i have written an R script which allow me to plot the number of Covid-10
>> > cases reported by he state of Ohio. In that se t of data the date format
>> > is in the form yyyy-mm-dd.
>> >
>> > My script uses:
>> >
>> > datebreaks <- seq(as.Date("2020-01-01"), as.Date("2020-08-10"), by="1
>> > week")
>> >             .
>> >             .
>> >             .
>> >        + scale_x_date(breaks=datebreaks)
>> >        + theme(axis.text.x = element_text(angle=30, hjust=1))
>> >
>> > to plot the data.
>> >
>> > The COVID Tracking Project publishes considerably more data than does
>> > the state of Ohio. However, The project supplies daily statistics using
>> > the date format YYYYMMDD.I have done some searching, but I can't seem to
>> > find a solution (that I can understand).
>> >
>> > How can I change the date forma from YYYYMMDD tp YYYY-MM-DD?
>> >
>> > Thanks is advanced.
>> >
>> > --
>> > Stephen P. Molnar, Ph.D.
>> > www.molecular-modeling.net
>> > 614.312.7528 (c)
>> > Skype:  smolnar1
>> >
>> > ______________________________________________
>> > R-help using 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.
>> >
>>
>>         [[alternative HTML version deleted]]
>>
>> ______________________________________________
>> R-help using 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.
>>
>

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