On Jan 15, 2011, at 6:57 AM, Christine SINOQUET wrote:
Hello,
I really wonder how to distinguish between secs and mins in the
example below.
In other terms, how can I access the time unit in variable d ?
start1 <- Sys.time();
stop1 <- Sys.time(); d <- stop1-start1;
> str(d)
Class 'difftime' atomic [1:1] 0.00343
..- attr(*, "units")= chr "secs"
> attr(d, "units")
[1] "secs"
print(d); v<-unlist(strsplit(as.character(d), split=" ")); print(v)
Time difference of 3.024054 secs
[1] "3.02405381202698"
stop1 <- Sys.time(); d <- stop1-start1;
# Wait a bit...
> d
Time difference of 1.053085 mins
> stop1 <- Sys.time(); d <- stop1-start1
> attr(d, "units")
[1] "mins"
print(d);
v <- unlist(strsplit(as.character(d), split=" ")); print(v)
Time difference of 3.189143 mins
[1] "3.18914334774017"
Thank you in advance for your kind help.
C.S.
David Winsemius, MD
West Hartford, CT
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