[R] dates by week multiple years
drj|m|emon @end|ng |rom gm@||@com
Wed Feb 6 07:16:51 CET 2019
Perhaps you do not want to go with calendar weeks:
365/7 = 52.14
as there are not an even number of weeks in a year, you may want to
plot by week from your initial observation. As you are using as.Date,
you could simply calculate weeks as:
data$Week<-1+as.numeric(data$Date - data$Date)%/%7
On Wed, Feb 6, 2019 at 4:52 PM Marlin Keith Cox <marlinkcox using gmail.com> wrote:
> Hello all, I did not attach data as this is probably simple answer that I
> cannot find.
> I am collecting daily data and would like to plot the data by week but now
> that we are into the new year, my plots started over with 01 after the last
> week of the year. How can I continuously keep adding weeks such as 53, 54,
> 55, 56, etc. instead of starting over?
> Below has worked for me until we moved into 2019.
> data$Date <- as.Date(data$TIMESTAMP,format="%m/%d/%y %H:%M")
> data$Week1 <- strftime(data$Date,format = "%V")
> M. Keith Cox, Ph.D.
> 17415 Christine Ave.
> Juneau, AK 99801
> U.S. 907.957.4606
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