>We're trying to shift to a more systematic record of feature
>requests, so can I suggest that you file a request at


>That way, this won't get forgotten.

Ok, I've done it.

>But while we're at it, it would be helpful if you could give the
>algorithm for this filter, or a publicly-available citation that
>gives the algorithm.  So far as I can see on a quick search, it
>seems to be a bit arcane, defined only in a 1981 book by Velleman
>and Hoaglin.

>Allin Cottrell

I can't find the proper reference either, I know it's on my books but can't find it anywhere. Well I'll be happy if we could just have some sort of median smoothing.

Marcos Larios Santa Rosa