Displaying 1 result from an estimated 1 matches for "searchend".
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2011 Mar 10
2
Selecting ranges of dates from a dataframe
...d"))
# create a data.frame
values <- data.frame(row.names=1, datum=numeric(0), write=numeric(0), read=numeric(0))
for(i in as.character(dates.serv)) {
# build up a values for a day-range
searchstart <- as.POSIXlt(paste(i, "00:00:00", sep=" "))
searchend <- as.POSIXlt(paste(i, "23:59:59", sep=" "))
# select all values from a specific day
day <- serv[(serv$datum >= searchstart & serv$datum <= searchend),]
write <- as.numeric(sum(as.numeric(day$write)))
read <- as.numeric(sum(a...