[Gretl-users] Re: Resample without replacement (Artur Tarassow)

On Mon, 23 Sep 2019, Sven Schreiber wrote: Yes, the 'm' is supposed to suggest "matrix" -- but actually I think that's right. We already have "smpl n --random" for datasets, and allowing a single series argument to <function whose name is under discussion> would be a little strange. You couldn't get a series back, it would have to be a vector -- unless you set n equal to the number of observations, thereby just scrambling the series rather than subsampling, which seems an unlikely project. If for some reason you want to draw a subsample from a particular series in isolation from the dataset as a whole, it seems OK to me that you should "cast" it to a vector -- as in, for a series x, matrix subx = msample({x}, n) And in the unlikely event that you want to put into the dataset a scrambled version of an entire series, you could do series scrambled_x = msample({x}, $nobs) ("casting" the vector result back to a series). Admittedly there's no rule saying that a function taking a series argument can't return a vector but this would be unusual. Most such functions return either a transformed series or a scalar statistic (with the exception of values()). Allin