Kamil Bęczyński

Kamil Bęczyński R, SAS, analizy

Temat: Pytanie odnośnie wyniku z użyciem 'Sys.time()'

Nie rozumiem, skąd bierze się poniższy wynik - czy to po prostu system ma ustawiony "minimalny krok zmiany godziny" równy 0.016s ?


> op <- options(digits.secs=6)
> Sys.time()
> for(i in 1:100)print(Sys.time())
[1] "2012-06-22 16:48:24.680428 CEST"
[1] "2012-06-22 16:48:24.680428 CEST"
[1] "2012-06-22 16:48:24.680428 CEST"
[1] "2012-06-22 16:48:24.680428 CEST"
[1] "2012-06-22 16:48:24.680428 CEST"
[1] "2012-06-22 16:48:24.680428 CEST"
[1] "2012-06-22 16:48:24.680428 CEST"
[1] "2012-06-22 16:48:24.680428 CEST"
[1] "2012-06-22 16:48:24.680428 CEST"
[1] "2012-06-22 16:48:24.680428 CEST"
[1] "2012-06-22 16:48:24.680428 CEST"
[1] "2012-06-22 16:48:24.680428 CEST"
[1] "2012-06-22 16:48:24.696028 CEST"
[1] "2012-06-22 16:48:24.696028 CEST"
[1] "2012-06-22 16:48:24.696028 CEST"
[1] "2012-06-22 16:48:24.696028 CEST"
[1] "2012-06-22 16:48:24.696028 CEST"
[1] "2012-06-22 16:48:24.696028 CEST"
[1] "2012-06-22 16:48:24.696028 CEST"
[1] "2012-06-22 16:48:24.696028 CEST"
[1] "2012-06-22 16:48:24.696028 CEST"
[1] "2012-06-22 16:48:24.696028 CEST"
[1] "2012-06-22 16:48:24.696028 CEST"
[1] "2012-06-22 16:48:24.696028 CEST"
[1] "2012-06-22 16:48:24.696028 CEST"
[1] "2012-06-22 16:48:24.696028 CEST"
[1] "2012-06-22 16:48:24.696028 CEST"
[1] "2012-06-22 16:48:24.696028 CEST"
[1] "2012-06-22 16:48:24.696028 CEST"
[1] "2012-06-22 16:48:24.696028 CEST"
[1] "2012-06-22 16:48:24.696028 CEST"
[1] "2012-06-22 16:48:24.711628 CEST"
[1] "2012-06-22 16:48:24.711628 CEST"
[1] "2012-06-22 16:48:24.711628 CEST"
[1] "2012-06-22 16:48:24.711628 CEST"
[1] "2012-06-22 16:48:24.711628 CEST"
[1] "2012-06-22 16:48:24.711628 CEST"
[1] "2012-06-22 16:48:24.711628 CEST"
[1] "2012-06-22 16:48:24.711628 CEST"
[1] "2012-06-22 16:48:24.711628 CEST"
[1] "2012-06-22 16:48:24.711628 CEST"
[1] "2012-06-22 16:48:24.711628 CEST"
[1] "2012-06-22 16:48:24.711628 CEST"
[1] "2012-06-22 16:48:24.711628 CEST"
[1] "2012-06-22 16:48:24.711628 CEST"
[1] "2012-06-22 16:48:24.711628 CEST"
[1] "2012-06-22 16:48:24.711628 CEST"
[1] "2012-06-22 16:48:24.711628 CEST"
[1] "2012-06-22 16:48:24.711628 CEST"
[1] "2012-06-22 16:48:24.711628 CEST"
[1] "2012-06-22 16:48:24.711628 CEST"
[1] "2012-06-22 16:48:24.711628 CEST"
[1] "2012-06-22 16:48:24.711628 CEST"
[1] "2012-06-22 16:48:24.711628 CEST"
[1] "2012-06-22 16:48:24.711628 CEST"
[1] "2012-06-22 16:48:24.711628 CEST"
[1] "2012-06-22 16:48:24.711628 CEST"
[1] "2012-06-22 16:48:24.711628 CEST"
[1] "2012-06-22 16:48:24.711628 CEST"
[1] "2012-06-22 16:48:24.711628 CEST"
[1] "2012-06-22 16:48:24.711628 CEST"
[1] "2012-06-22 16:48:24.711628 CEST"
[1] "2012-06-22 16:48:24.711628 CEST"
[1] "2012-06-22 16:48:24.711628 CEST"
[1] "2012-06-22 16:48:24.711628 CEST"
[1] "2012-06-22 16:48:24.711628 CEST"
[1] "2012-06-22 16:48:24.711628 CEST"
[1] "2012-06-22 16:48:24.711628 CEST"
[1] "2012-06-22 16:48:24.711628 CEST"
[1] "2012-06-22 16:48:24.711628 CEST"
[1] "2012-06-22 16:48:24.711628 CEST"
[1] "2012-06-22 16:48:24.711628 CEST"
[1] "2012-06-22 16:48:24.711628 CEST"
[1] "2012-06-22 16:48:24.711628 CEST"
[1] "2012-06-22 16:48:24.711628 CEST"
[1] "2012-06-22 16:48:24.711628 CEST"
[1] "2012-06-22 16:48:24.711628 CEST"
[1] "2012-06-22 16:48:24.711628 CEST"
[1] "2012-06-22 16:48:24.711628 CEST"
[1] "2012-06-22 16:48:24.72722 CEST"
[1] "2012-06-22 16:48:24.72722 CEST"
[1] "2012-06-22 16:48:24.72722 CEST"
[1] "2012-06-22 16:48:24.72722 CEST"
[1] "2012-06-22 16:48:24.72722 CEST"
[1] "2012-06-22 16:48:24.72722 CEST"
[1] "2012-06-22 16:48:24.72722 CEST"
[1] "2012-06-22 16:48:24.72722 CEST"
[1] "2012-06-22 16:48:24.72722 CEST"
[1] "2012-06-22 16:48:24.72722 CEST"
[1] "2012-06-22 16:48:24.72722 CEST"
[1] "2012-06-22 16:48:24.72722 CEST"
[1] "2012-06-22 16:48:24.72722 CEST"
[1] "2012-06-22 16:48:24.72722 CEST"
[1] "2012-06-22 16:48:24.72722 CEST"
[1] "2012-06-22 16:48:24.72722 CEST"
[1] "2012-06-22 16:48:24.72722 CEST"
[1] "2012-06-22 16:48:24.72722 CEST"
[1] "2012-06-22 16:48:24.72722 CEST"
[1] "2012-06-22 16:48:24.72722 CEST"
[1] "2012-06-22 16:48:24.72722 CEST"

Temat: Pytanie odnośnie wyniku z użyciem 'Sys.time()'

Tak.

http://stat.ethz.ch/R-manual/R-devel/library/base/html...
On Windows it increments in clock ticks (usually 1/60 of a second) reported to millisecond accuracy.

 > 1/60
[1] 0.01666667



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