powered by
CTIME.SECONDS
computeCtime_seconds(x,date)
character, POSIXlt or POSIXt
difftime
DateTimeClasses
as.POSIXlt
strptime
xpssCompute(x="2013-09-14 12:12:12", fun="computeCtime_seconds", date="2013-09-14 10:10:10") xpssCompute(x="2013-09-14 12:12:12", fun="computeCtime_seconds", date="2013-09-06 22:10:10")
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