# brain of mat kelcey

## moving average of a time series in R

June 15, 2010 | View Comments

in this a sliding window of 3 elements

 1 2 3 4 5 6 7 8 9 > x = c(3,1,4,1,5,9,2,6,5,3,5,8) > ra_x = filter(x, rep(1,3)/3) > ra_x Time Series: Start = 1 End = 12 Frequency = 1 [1] NA 2.666667 2.000000 3.333333 5.000000 5.333333 5.666667 4.333333 [9] 4.666667 4.333333 5.333333 NA