[R] Adding Year-Month-Day to X axis

[Bert Gunter]

"Apparently, R does not understand my Year-Month-Day "

I think, rather, you need to learn how R handles dates and times.

See here to begin, perhaps:
?DateTimeClasses

There are many R resources for dealing with data over time, many of which
are listed here, and others might be found by online searching.
https://cran.r-project.org/web/views/TimeSeries.html

There are also many tutorials on dealing with time data in R. Even a
cursory web search should find many.

... and of course someone may respond directly to your query here (but not
me, as I'm not that knowledgeable).

Cheers,
Bert




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 Sat, May 5, 2018 at 11:14 AM, Gregory Coats <gregcoats using me.com> wrote:

> I am using R 3.5.0 for Mac OS X.
> Issuing these two commands yields the expected plot.
> y_duration <- c (301.59050,  387.35700,  365.64366,  317.26150,
> 321.71883,  342.44950,  318.95350,  322.33233,  330.60333,  428.99516,
> 297.82066)
> plot (y_duration, type="l”)
>
> Adding Year-Month-Day values for the x axis, and then calling plot (x,y),
> yields a bizarre plot. Apparently, R does not understand my Year-Month-Day
> values.
> x_yyyymmdd <- c (2018-04-25, 2018-04-26, 2018-04-27, 2018-04-28,
> 2018-04-29, 2018-04-30, 2018-05-01, 2018-05-02, 2018-05-03, 2018-05-04,
> 2018-05-05)
> plot (x_yyyymmdd, y_duration, type="l")
>
> I would be enormously appreciative of your guidance.
> Greg Coats
> Virginia, USA
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>
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