Rolling dataset having different row numbers [closed] - r

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My sample data is as follows.
There are event, datetime and ten_minute.
The format of datetime is "POSIXlt" "POSIXt". Ten minute is just a substring of the first digit of minute in datetime variable.
I’d like to generate multiple rolling dataset using R. For example, Data_1 have rows with ten_minute value of 0, 1, 2. Data_2 have rows with ten_minute value of 1, 2, 3. (And finally, Data_n would have value of 3, 4, 5.) I also want to change the width of window. In this example the width of window is 3. I want to change the width to 5, 10 and etc.
I've tried R coding myself over a week. But I can't figure it out how to do this.

Answer 1

First, a function to generate the windows you need:
generate.windows <- function(vec.start, vec.numberofsets, vec.wdith) {
vec.sets <- vec.start:vec.numberofsets
lapply(vec.sets, function(n) {
seq(from = n, length.out = vec.wdith)})}
Next, extract the data.frames that correspond to each window:
# Assume your original data set is called df.data
list.windows <- generate.windows(1, 10, 3)
list.data.frames <- lapply(list.windows, function(n) {df.data[df.data[,"Ten_minute"] %in% n,]}