what is y[t] in r when does y[t] come into use? what is y[t] in r what is a linear combination of past values of x[t] up to a certain horizon. how do i fit a simple filter in r? how to do a simple filter in r? how does r do it for simple filter what is a complex function in r what is the correct name for r filter? what is fit filter in r how to fit two timeseries with r what is the proper name for this kind of model what does y[t] mean what is y[t] how does r fit a simple filter how do you fit a simple filter in r? how do you fit filter in R how to fit a simple filter what is the y[t] of a filter in r? what type of filter would a timeseries use as a model? how do i fit a simple filter r?