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2010 Oct 04
3
Loop too slow for Bid calc - BUT cannot figure out how to do with matrix
...timestamp then getting the previous row price from BidsMatrix...which would have been the bid at the beginning of that second. I am new to R, so need some help to do this ?properly?. # OneSecond. Matrix above called ?One Second Bid Matrix? # BidsMatrix. Matrix above called ?Bids Matrix? bidrow = 1 # looping through each second for (sec in 1:length(OneSecond$Second) ) { t = as.POSIXlt(onesec$Second[sec],origin = "1970-01-01") sec.onesec = as.numeric(format(t, "%H%M%S")) # convert date/time to format HHMMSS as a number # Find bid for second, which is the...