R Find time difference in seconds for YYYY-MM-DD HH:MM:SS.MMM format

Question

I\'m trying to subtract 2 character vectors containing date time information in the following format:

> dput(train2)

structure(list(time2 = c(\"2011-09-01 23         


        

Answer 1

>  x1<-"2013-03-03 23:26:46.315" 
>  x2<-"2013-03-03 23:31:53.091"
>  x1 <- strptime(x1, "%Y-%m-%d %H:%M:%OS")
>  x2 <- strptime(x2, "%Y-%m-%d %H:%M:%OS")
> x1
[1] "2013-03-03 23:26:46"
> x2
[1] "2013-03-03 23:31:53"

I followed the answer of @Dirk Eddelbuettel, but I am losing precision. How can I force R to not be cuting parts of second?

Thankfully (man of strptime) I answered my question myself:

op <- options(digits.secs = 3)

After applying this setting the precision will be used.

http://stat.ethz.ch/R-manual/R-devel/library/base/html/strptime.html

The belowe may be useful if you would like to get difference in seconds, but get in minutes:

> as.numeric(x2-x1,units="secs")
[1] 306.776