convert states to run length encoding
rle_states.Rdtakes a vector of numbers (e.g., states) and returns a numeric group value indicating the a group for each run of the same value. c(5,5,5,6,6,5,5,5,2) -> 1 1 1 2 2 3 3 3 4
rle_states.Rdtakes a vector of numbers (e.g., states) and returns a numeric group value indicating the a group for each run of the same value. c(5,5,5,6,6,5,5,5,2) -> 1 1 1 2 2 3 3 3 4