Sliding time intervals for time series data in R

Question

I am trying to extract interesting statistics for an irregular time series data set, but coming up short on finding the right tools for the job. The tools for manipulating

Answer 1

Here's what I was suggeting, but I'm not sure it exactly answers your question

#Picking up where your code left off
library(xts)
library(TTR)
x <- .xts(vecZ, vecTimes)
xx <- na.locf(cbind(xts(, seq.POSIXt(from=start(x), to=end(x), by='sec')), x))
x$means <- runMean(xx, n=180)
out <- x[!is.na(x[, 1]), ]
tail(out)

                                  x     means
1969-12-31 18:28:17.376141 0.2053531 0.1325938
1969-12-31 18:28:17.379140 0.2101565 0.1329065
1969-12-31 18:28:17.619840 0.2139770 0.1332403
1969-12-31 18:28:17.762765 0.2072574 0.1335843
1969-12-31 18:28:17.866473 0.2065790 0.1339608
1969-12-31 18:28:17.924270 0.2114755 0.1344264