[Yt-dev] sigma

[david collins]

I vote do it the 2 pass way.  I've been looking at this this morning,
and what I keep coming up with (though I don't have a full solution)
is that you're going to need to compute partial sums of the weight
field.  I think this pass through the weight field almost outweighs
the advantage of using this single pass approach.

d.

On Wed, Feb 4, 2009 at 10:23 AM, david collins <antpuncher at gmail.com> wrote:
>> so we'll need to weight the values to calculate std-dev, yes?
>
> I think I answered the wrong question.  Ignore my first post, the UT
> matrix is irrelevant.
>
> d.
>