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datetime
2011 Feb 02
0
Need help subsetting time series data
...,MR1001$time)
>datetime<-as.POSIXct(strptime(as.character(datetime), tz="UTC", "%m/%d%Y
%H:%M:%S"))
>datetime2<-datetime[-1]
>datetime2[length(datetime)]<-datetime2[length(datetime)-1]+3600
>datetime3<-datetime2-datetime
>datetime4<-datetime3/60
>datetime5<-as.numeric(datetime4)
>t1$diff<-datetime5
This didn't work either though, because when an unwanted fix occurred after
a wanted fix the value in the "diff" column was small, and I couldn't figure
out how to subset the data in that format (I want to keep the 1st, 2nd, 3rd...