On 7/17/2022 8:47 PM, Gregory Coats via R-help wrote:
For the year from 2022-01-01 to 2022-12-31, I computed the sunrise and sunset
times for Reston, Virginia, USA. I am seeking the syntax to direct R to read in
these dates and times, and then graphical plot the sunrise and sunset times for
each day in the year 2022. How do I tell R that I store the Sunrise Date and
Time like this?
YYYY-mm-dd HH:MM:SS
2022-01-01 7:28:10
2022-01-02 7:28:17
Greg Coats
[[alternative HTML version deleted]]
______________________________________________
R-help@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.
Here is one way using the strptime function,
> in_dt_str <- '2022-01-01 7:28:10'
> dt <- strptime(in_dt_str,'%Y-%m-%d %H:%M:%S')
if the date and time are stored in different variables then paste them
together before converting
> in_dt <- '2022-01-01'
> in_tm <- '7:28:10'
> dtm <- strptime(paste(in_dt, in_tm, sep=' '),'%Y-%m-%d %H:%M:%S')
Hope this is helpful,
Dan
--
Daniel Nordlund
Port Townsend, WA USA
--
This email has been checked for viruses by Avast antivirus software.
https://www.avast.com/antivirus
______________________________________________
R-help@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.
