Greetings all,
I'm working on a project trying to apply fourier analysis to timestamped router
logs, using R to perform the analysis. The idea is to determine if any type of
traffic (say, outgoing ICMP requests) has strong periodic features because it
may indicate a compromise somewhere on the network.
The FFT requires all data points to be evenly spaced, but the recorded events
do not occur at a consistent constant dt, so I need to "zero pad" the data. I
can do this for small data sets (say, one day's worth of traffic) in excel.
However, I am now attempting it on a large scale using a 25-day router log,
which should have 2,160,000 records. The log actually contains only 56,725
records.
So, I'm looking for ways in which to pad the data in R. If anyone could just
point me at the right man pages to read that would be itself a great help.
Thanks in advance,
Pete
---------------------------------
[[alternative HTML version deleted]]
______________________________________________
R-help@stat.math.ethz.ch mailing list
https://stat.ethz.ch/mailman/listinfo/r-help
PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html
